After accepting the Lassiter's Erinsborough general manager's job, Terese meets with the hotel's owner Paul Robinson for a tour. Paul is initially unaware that she has the job and Terese allows him to interview her, before telling him that she just wanted to make sure they would work well together. Terese moves into Number 22
Ramsay Street with her husband Brad and their twins Imogen and Josh. She learns that Brad's former girlfriend, Lauren Turner, is living across the street and befriends her. Terese fires receptionist
Caroline Perkins (Alinta Chidzey) for being lazy and rude, but Caroline then sues the hotel, claiming that Paul sexually harassed her. Terese arranges for Caroline to be paid off. After Terese stays late at work, Brad accuses Paul of trying to take advantage of her in front of an inspector, costing the hotel its five-star rating. Terese assures Brad that he got it wrong.
Susan Kennedy (
Jackie Woodburne) becomes concerned that Imogen might have an eating disorder, but Terese dismisses her concerns. However, Imogen later collapses and is admitted to hospital with a torn oesophagus, as a result of
bulimia. Terese tells Imogen about her own eating disorder in an attempt to get her to open up. Paul promotes Terese to Head of Operations for the Lassiter's complex. He installs paid parking for the complex, angering the business owners. Terese realises Paul set her up, so she increases the maintenance rates for the apartment tenants and scraps the paid parking. Relations between Paul and Terese deteriorate and she quits her job. Paul threatens to sue her for breach of contract, but Terese counter-sues him for defamation. Lucy convinces Paul to reinstate Terese. Brad sues
Mason Turner (
Taylor Glockner) when Josh is injured in an abseiling accident, causing tension between the Willis and Turner families. Terese tries to persuade Mason to leave Erinsborough for a job in Darwin and Lauren accuses her of wanting to get rid of her son. Terese struggles to cope when Lauren informs Brad that they have a daughter together, who was adopted out. When Brad's father, Doug, visits, Terese believes that he prefers Brad's first wife, Beth, to her, but they rebuild their relationship when Doug is diagnosed with Alzheimer's disease. Brad's mother, Pam, soon arrives in Erinsborough and Terese helps her see that Doug needs her support. Terese begins seeing Imogen's counsellor as a way of coping with all the stress in her life. Brad and Lauren fly to Adelaide to find their daughter. Brad stays longer than planned, causing further estrangement from Terese. When he returns, Terese questions the strength of their marriage but they reconcile. Terese pushes Brad to take a teaching position at Erinsborough High. She also tries to help Paul when he becomes depressed, and clashes with hotel guest
Paige Novak (
Olympia Valance). Paige is revealed to be Lauren and Brad's long lost daughter and Terese struggles to accept her. Upon learning Paige trashed Harold's Store, Terese has her arrested. She tries to convince Lauren's husband
Matt (
Josef Brown) to join her in keeping an eye on Paige, but he refuses. Terese later drops the charges and decides to give Paige the benefit of the doubt. When Terese learns that Brad kissed Lauren in Adelaide, she orders Brad to stay away from Lauren, suspecting a continuing affair. Terese and Brad's marriage becomes strained, and Terese moves into the hotel. Paul invites Terese's former boss Ezra Hanley to Erinsborough to help her organise a festival. Terese and Ezra almost kiss, but Terese pulls away, realising she loves Brad. She asks Ezra to leave her room, but he refuses and Terese has to physically force him to go. Brad asks Terese to work on their marriage and she agrees. Ezra attempts to sue Terese and Paul, but he soon leaves after he is attacked by a mystery assailant. Terese's brother
Nick Petrides (
Damien Fotiou) takes up a job at the hospital. She learns that the day before her wedding to Brad, Nick engineered a meeting between Brad and his ex-wife, to see if Brad was faithful to her. She tries to calm things between Brad and Nick as they feud. Terese stops Matt from having an affair with
Sharon Canning (Natasha Herbert). After he dies, Terese tries to keep Sharon from talking to Lauren and sends her on a cruise. She starts to worry about Brad and Lauren's closeness. It soon emerges that Nick has been treating Paul for leukaemia that he does not have and he is arrested. Ezra returns as the acquisitions manager for the Quill Group, who purchase Lassiter's. He reduces Terese's responsibilities and when he makes a suggestive comment, Terese quits her job. Upon her return, Terese learns from Ezra's son
Clem (Max Whitelaw) that his former girlfriend,
Chloe Jones (Gaby Seow), accused Ezra of assaulting her. Terese encourages Chloe to go to the police, which results in Ezra's arrest. The Quill Group hire Terese as the manager of Lassiter's. Still feeling insecure in her marriage, Terese pushes Lauren and
Robin Dawal (Max Brown) together. Terese also realises Paige is trying to reunite Brad and Lauren, so she encourages Paige's adoptive mother
Mary (
Gina Liano) to reconcile with her daughter and take her to Singapore. Terese begins drinking and develops alcoholism, causing further issues in her marriage. Terese later learns Brad had sex with Lauren, ending their marriage. Brad and Terese's youngest daughter
Piper (Mavournee Hazel) returns from Canada. Terese is caught up in
a fire that breaks out at Erinsborough High. She and Lauren become trapped beneath some lockers, and Brad is only able to rescue Lauren. Terese suffers serious burns and has to undergo a skin graft. Terese develops
sepsis and Brad vows to help out more while she recovers. Terese invites Paul to live with her after he loses ownership of Lassiter's, despite a conflict of interest as Terese's new boss,
Julie Quill (Gail Easdale), is an old enemy of Paul's. Lauren nominates Terese for a "Women in Business Award". Terese kisses Paul and tries to seduce him, only to change her mind at the last moment. When Paul keeps trying to undermine Julie, Terese, caught in the middle, chooses her job over her friendship with Paul and asks him to move out. The hotel boiler explodes and both Josh and Doug die. Paul supports her and tells her he loves her, but she is horrified when Paul is arrested for the explosion. Terese meets Walter Mitchell at an AA meeting and they briefly date. Terese bribes
Cecilia Saint (
Candice Alley) into committing perjury, so Paul is sent to prison. However, during the trial, Terese drinks and admits to the bribery. She is charged with perverting the course of justice and fired by Julie. Terese continues drinking and collapses in the laundry room. She then leaves Erinsborough for a health retreat in Tasmania and is later given a suspended sentence. With the financial help of the Udagawa family, Terese buys Lassiter's. Terese disapproves of Piper's relationship with
Tyler Brennan (
Travis Burns), due to the age gap between them. Piper accuses Terese of hypocrisy when she has a brief romance with
Ryan Prescott (James Sweeny), who is much younger than her. Ryan is behind a series of hidden cameras found in Lassiter's, so Terese confronts him and eventually gains the USB that the footage is on, using the help of
Tim Collins (
Ben Anderson). Terese then has Ryan's car towed. Terese and Brad hold a divorce party, and she witnesses Brad proposing to Lauren. Terese has a date with
Gary Canning (
Damien Richardson), but soon discovers he is working for Paul. Leo Tanaka attempts to play Terese and Paul off against each other, and he later outbids them for the Men's Shed tender. Terese bans Piper from dating Tyler while she is living at home, so Piper moves out. Terese and Gary grow closer and begin a relationship. Terese breaks up with Gary after suspecting he is having an affair with his former partner
Brooke Butler (
Fifi Box). Gary explains that he was just helping Brooke reconnect with her daughter Jessie. He and Terese reconcile and become engaged. Paul later declares his feelings for her. Terese experiences pain in her chest and finds a lump on her breast. She undergoes a biopsy, which comes back negative. Terese asks for the test to be run again after learning her grandmother died from breast cancer and it comes back positive. Terese keeps her diagnosis a secret but later confides in Paul, who keeps her company at her first chemotherapy session. Gary wrongly assumes Terese is pregnant or drinking again, so she tells him and Piper that she has cancer. Terese is sick during a meeting with potential investors and
Jasmine Udagawa (Kaori Maeda-Judge) admits to being concerned about her recent performance. After firing her assistant, Terese offers Paige the job. Terese begins losing her hair and tells Paul that she does not think her treatment is working. Gary meets with Nick to discuss her diagnosis and persuades Terese to visit him. Nick tells Terese that
immunotherapy could help her and she agrees to speak at his parole hearing. Nick is released from prison and he oversees Terese's new treatment. Jasmine learns about Terese's cancer and the Udagawas threaten to remove their investment. Paul persuades
Toshiro Udagawa (Lawrence Mah) to stand by Terese. After Terese learns her tumours have shrunk, she and Paul have sex. Terese fires
Courtney Grixti (Emma Lane) when she wrongly assumes that she has been giving the male clients of the
day spa erotic massages. Courtney later tries to sue her. Lassiters is also downgraded to a three-star hotel. Terese tells Susan about her affair with Paul, and Susan pulls out of performing the wedding ceremony. Terese decides to go ahead with the wedding, but during the ceremony, she tells Gary she cheated on him with Paul. Devastated, he ends their engagement. Terese goes to Paul but learns he is engaged to Courtney after an apparent whirlwind romance. Paul informs Terese that he has bought Mr Udagawa's share of Lassiters, making him her boss. He also installs Courtney as a rejuvenation consultant for the hotel and she regularly clashes with Terese. Weeks after their failed wedding, Terese and Gary reconcile, but their relationship is constantly troubled by Gary's distrust of Paul. Terese proposes to Gary and he accepts, but after finding Terese and Paul working late at the hotel, he realises he cannot move past her betrayal and ends their relationship. Paul asks Terese to mentor his son
Leo Tanaka (
Tim Kano). After months of working together closely, Leo declares his feelings for Terese. She rejects him and ends the mentorship, but slowly realises she reciprocates Leo's feelings and they have sex. They keep their fling a secret from Paul, who is still hopeful for a reconciliation with Terese. He catches them together at the penthouse and seeks revenge for their betrayal. Evicted from Paul's penthouse, Leo moves in with Terese and their relationship strengthens, despite constant opposition from Paul. Leo tells Terese that he loves her but suddenly breaks up with her to pursue a relationship with
Delaney Renshaw (Ella Newton). Terese tries to find out why he broke up with her but eventually accepts that he has moved on. After Piper overhears Delaney taking a suspicious phone call, Terese goes through her things but is caught. She then attempts to seduce Paul, but he rejects her advances. Leo tells Terese that he broke up with Delaney and still loves her, but she refuses to listen to him. Delaney's uncle,
Ivan Renshaw (Michael Shanahan), shoots at Leo, but accidentally hits Terese instead. She is shot in the shoulder, and the blood vessels around the injury are damaged, requiring further surgery. While in hospital, Terese unconsciously tells Piper that she still loves Paul. Terese makes a full recovery. Leo and Terese get back together and Leo proposes to her, but she rejects the proposal as she does not see a future with him. Paul confronts Terese and she admits that she still has feelings for him and they kiss. Leo walks in on them and accuses Terese and Paul of having an affair behind his back. Leo wrecks the hotel's Valentine's Day display and injures
Vera Punt (Sally-Anne Upton). He then gets drunk and causes a scene in the street, as he begs Terese to come back to him. While giving an apology to Vera, Leo reveals that he is now dating Piper. Terese accuses Leo of seducing Piper out of revenge and says she thought Piper had more self-respect. Terese later apologises to Piper. A few months later, Terese becomes engaged to Paul. Leo and Paul's daughter,
Elle Robinson (
Pippa Black), concoct a plan to stop Terese from marrying Paul. One by one, all of Paul's ex-wives –
Gail Robinson (
Fiona Corke),
Lyn Scully (
Janet Andrewartha),
Rebecca Napier (
Jane Hall) and
Christina Alessi (
Gayle Blakeny) – return to Erinsborough to try and convince Terese into not marrying Paul. Gail informs Terese that she wants Paul's granddaughter,
Harlow Robinson (Jemma Donovan), to live with her in
Tasmania, but Terese and Paul convince her not to. Terese sees Paul hugging Rebecca on the Lassiter's
mezzanine and confronts them. Paul explains that he was comforting Rebecca, who was feeling guilty for pushing Paul off that mezzanine years prior. Terese ignores Paul's ex-wives and marries Paul, with Christina and
Caroline Alessi (
Gillian Blakeny) watching as witnesses. When Terese returns from her honeymoon, a hidden camera is found in a Lassiter's room, forcing her to briefly step down as hotel manager. The following year,
Jane Harris (
Annie Jones) is catfished and Paul uses Terese's wedding vows in an apology letter, angering Terese. Her and Paul then organise a vow renewal and their marriage is put back on track. When Gary is murdered, Terese attends his funeral and helps his grieving mother. A year later, Terese announces that Lassiter's would cease
Australia Day celebrations and become a supporter of the
"change the date" movement. Tim Collins causes strife for her by posting an article on the
West Waratah Star newspaper that features a comment Terese made five years, which countered her decision to halt celebrations. Terese meets with Indigenous councillor
Jacinta Hay (Maurian Spearim) to discuss
Aboriginal and
Torres Strait Islander representation among Lassiter's staff. After Jacinta mentions Terese's comment from the article, Terese makes a public statement explaining how her opinion on the issue has changed since 2016. Terese discovers that Lassiter's employee
Jesse Porter (Cameron Robbie) is the son of Julie Quill and is spying for
Shay Quill (Yasmin Kassim). Terese fires Jesse and orders him to stay away from her forever. However, when Terese discovers that Shay has kicked Jesse out of her business, she offers Jesse a room at Lassiter's. Terese confronts Shay and tells her that Jesse is not responsible for Julie's actions, which damaged Shay's business' reputation. Terese ultimately decides to invest in Shay's business, but later informs Shay that the investment will have to be postponed indefinitely, as Paul has personal matters to deal with. Terese learns that Jesse's birth date is Josh's original date of confinement and begins treating Jesse as her son as a way to grieve. When Jesse tells Terese that he is meeting with Julie, Terese tags along and goes to the prison to confront Julie. Jesse does not turn up to the prison, which allows Terese and Julie to talk. Julie accuses Terese of getting close to Jesse as revenge, but Terese explains that she was sympathetic for him, as Shay was using him. Terese explains that Jesse's presence makes her feel like she still has Josh with her. After Julie apologises for what she did, Terese tells her that she wants to move along with her life. Terese finds out that Paul used his son,
David Tanaka (
Takaya Honda), to scare Jesse away from the prison. She also becomes aware that Paul paid David's surrogate,
Nicolette Stone (Charlotte Chimes), who had run away while pregnant, one million dollars for her to give up David's baby and to never return to Erinsborough. The money Paul used is why Terese could not invest in the Quill Group. Terese receives the final blow when she discovers that Paul paid
Holden Brice (Toby Derrick) to give a fake testimony against Harlow's boyfriend,
Brent Colefax (Texas Watterson). Terese confronts Paul and kicks him out of the house. She later calls for a separation. Harlow gathers information off Terese twice and feeds it to Paul in an attempt to reunite the couple, but it backfires upon her when Terese finds out and kicks her out of the house as well. Terese has flashbacks of Paul's ex-wives warning her and pours herself a glass of wine.
Chloe Brennan (
April Rose Pengilly) stops her in time and pours the alcohol down the sink. Lucy asks Paul and Terese to present together at a Lassiter's conference in Queensland, putting further pressure on her. She relapses at the conference and is found drunk on the beach by Paul's estranged brother
Glen Donnelly (
Richard Huggett). Glen agrees to keep her relapse a secret and Terese finds herself romantically drawn to him. When Paul is injured by falling debris in a storm, Terese feels she is to blame and moves back into the penthouse to aid his recovery. They share a kiss, prompting Terese to admit her feelings for Glen. Not wanting Terese to move out, Paul lies that he is seriously ill. They reconcile their marriage and plan to renew their vows, but on the day of the renewal Paul's lies are exposed and Terese ends their relationship for good. Paul is infuriated when Terese and Glen start dating and he pursues an aggressive divorce settlement from her. He also allows Terese to organise a fashion show week in full knowledge that Lassiter's partnership with
Montana Marcel (
Tammin Sursok) will end disastrous due to her secret financial issues. When Montana's secret is exposed, Terese is fired from the hotel. Things ease between the exes when Paul finally offers to buy Terese out of Lassiter's. Paige visits Erinsborough and expresses her doubts about Terese and Glen's relationship. When Glen asks Terese to move away from Melbourne to run a new business together, she accepts but continues to be drawn to Paul as he advances the hotel sale, with his own plans to move to New York. Terese ends things with Glen and kisses Paul, but he initially rejects her in fear that he will hurt her again. On the eve of Paul's departure, the couple finally talk and rekindle their relationship. Both Paul and Terese decide to stay in Erinsborough, with Glen departing soon after. Two years pass in Erinsborough. Paul and Terese's relationship collapses again when he jilts her at the altar. She begins a relationship with her neighbour
Toadie Rebecchi (
Ryan Moloney), who has recently been left by his wife
Melanie Pearson (
Lucinda Cowden). They marry quickly, troubling their friends and family, although Paul does give them his blessing and attends their wedding. Toadie and his children
Nell (Ayisha Salem-Towner) and
Hugo (Tanner Ellis-Anderson) move into Terese's home. Whilst she welcomes her new stepchildren, Terese is unaware that Nell is scheming to reconcile Toadie and Melanie. ==Reception==