2002–2005 Sindi meets
Darcy Tyler (
Mark Raffety) at Lassiter's and there is an attraction between them. Darcy later treats Sindi's hurt ankle, but does not pursue anything further as he is dating her sister
Penny (
Andrea McEwan). Sindi seizes the opportunity to
blackmail Darcy by threatening to tell Penny about his flirting with her unless he gives into her demands which include paying for clothes and shoes. Penny sees the pair together one day and as revenge reports Darcy to the medical board for having an affair with a patient. Sindi soon leaves Erinsborough. The following year, Sindi crosses paths with Darcy again and is used as a pawn in his game to drive a wedge between Toadfish Rebecchi and Dee Bliss, in order for Darcy to win Dee back. Sindi goes through with the plan by flirting with Toadie, but ends up falling for him for real. Darcy is annoyed, but Sindi threatens to expose his dubious dealings. When Sindi leaves an earring behind and goes to retrieve it from Toadie's house, she meets Dee, who assumes Sindi has moved in. Sindi tries to explain, but Dee leaves before she can. Several months later, Sindi returns when
Tim Collins (
Ben Anderson), Toadie's colleague, hires her to work at their legal practice. Things are awkward at first, but Sindi settles in the job and she and Toadie remain amicable. As the amount of time they spend together increases, Sindi reveals she still loves Toadie, but he is not over Dee who drowned several months previously in a car crash on their wedding day. Sindi leaves once again. Sindi returns as the director, producer and host of
Making Mansions, a home make over show. She chooses the Scully family's house as the venue to be redesigned. Things do not work out as Sindi manages to insult her crew, prompting them to walk out on her. Luckily, several friends and neighbours help her and the work is eventually completed. Sindi becomes a resident herself of Ramsay Street when she lodges with
Susan Kennedy (
Jackie Woodburne). Toadie and Sindi begin a relationship, but not without obstacles including the revelation of Sindi's previous affair with Rocco Cammeniti and his refusal to let her go, which results in Toadie being kidnapped and ending up in a brief coma. Sindi is a strong support for Toadie when he briefly takes on guardianship of his cousin
Stingray Timmins (
Ben Nicholas), before Stingray moves in with Sindi and Susan. However, Toadie still struggles with the idea of commitment so soon after Dee's death, and during a low patch Sindi shares an unexpected kiss with Toadie's friend and housemate
Stuart Parker (
Blair McDonough). She confesses all to Toadie after he asks her to move into Number 30, and their relationship soon ends. Sindi and Stuart are caught up in a bank raid and held hostage by gunmen. Although the situation is resolved peacefully, the trauma brings Sindi and Stuart together and they begin seeing each other in secret. The Lassiters complex is set on fire by
Paul Robinson (
Stefan Dennis), and Sindi becomes trapped inside Lou's Place. Stuart runs in to save her, but he too becomes trapped and passes out due to smoke inhalation. After the building collapses entirely, the firefighters are about to give up looking for them in the wreckage, until Sindi manages to call Toadie. She and Stuart are rescued, but Stuart is left blind. Toadie realises that Sindi is in love with Stuart, and reluctantly gives his blessing to the relationship. Sindi discovers that an operation to restore Stuart's sight will cost $50,000, and in desperation tries to raise the money by selling her body. Her only client, Gary Evans (Ian Scott) gives her the money after he loses a coin toss. Stuart refuses to accept the money after realising how it was obtained, and Sindi instead donates it to
Harold Bishop (
Ian Smith) for the
Salvation Army. A guilty Paul later offers to pay for the operation from his charity, the
Helen Daniels Trust fund, although neither Sindi or Stuart are aware of his involvement in the fire. Sindi and Stuart are happy in their relationship for a while, before a run of odd events start happening around them. Sindi loses her job at
All Her Magazine and she is later snubbed at a school reunion by her old classmates. Several of their friends and neighbours suffer mysterious accidents, including Susan,
Liljana Bishop (
Marcella Russo), and
Janae Timmins (
Eliza Taylor) - coincidentally all after upsetting Sindi in some way. Trent Hoffa, a colleague competing with Stuart for a promotion, is also run over by a mystery driver. In the meantime Sindi proposes to Stuart, and the two have a whirlwind engagement. Toadie links the numerous accidents with Sindi's increasingly bizarre behaviour, and worried for Stuart's safety, tries to halt the wedding ceremony. Stuart punches Toadie, and the wedding goes ahead, but Stuart realises the truth when he later sees an unhinged Sindi push Toadie down a flight of stairs. Hospitalised, it emerges that Sindi has been suffering from paranoid delusions, and had received treatment in her teens after pushing schoolmate
Kelly Weaver (Simone Ray) down some stairs, leaving her paralysed. A broken Sindi asks Stuart for an annulment, with her doctors advising that her obsession for a perfect married life was a trigger. Stuart refuses the annulment but agrees to a temporary break while she recovers, and she is transferred to a clinic in New South Wales. Almost a year later, Sindi agrees to join Stuart for a new start in
Oakey as he leaves Ramsay Street.
2017–2018 Sindi and Stuart later divorce. While working in a kitchen, she meets
Andrea Somers (also
Madeleine West), and they concoct a plan where Andrea poses as her lookalike, the presumed dead Dee Bliss, to scam Toadie. She eventually returns to Erinsborough and tells Andrea she regrets her part in the scam, but demands her share of the money to be increased. Weeks later, Sindi returns to the news that Andrea has conned Toadie out of $100,000 and fled to London.
Susan Kennedy (
Jackie Woodburne) reads Sindi's texts and discovers Andrea's true identity. A panicked Sindi then leaves town. Nearly a year later, Sindi returns to Erinsborough to give Toadie Andrea's phone number. Months later, Sindi brings Andrea's infant son
Hugo Somers (John Turner) to Ramsay Street, and breaks the news that Toadie is Hugo's father.
Gary Canning (
Damien Richardson) gives Sindi a job at The Flametree Retreat. While returning to the retreat to make sure she locked up, Sindi is confronted by
Jeremy Sluggett (
Tamblyn Lord), who demands her keys so he can retrieve a bag of money from a drawer. Sindi manages to contact the police, and Jeremy knocks her unconscious as he escapes. While Amy is visiting Sindi, she tells her about a job offer as a sales manager in Sydney. Sindi is reluctant to accept as she wants to makes amends to Sonya and Toadie, but Sonya gives Sindi her blessing. Sindi comes to Ramsay Street to say her goodbyes and Toadie asks if she ever told Andrea about his first kiss with Dee, but Sindi tells him that she did not mention it. ==Reception==