Gabby is born on Christmas Day to
Bernice Blackstock (
Samantha Giles), and a DNA test later reveals
Ashley Thomas (
John Middleton) to be her father. Bernice does not take to motherhood easily and leaves the village as she divorces her father in 2002. Gabby occasionally visits her mother, who later marries a man named Charlie Willis in 2004 and has a second daughter,
Dee Dee (Mia Gibson-Reed). Gabby and her half-brother
Arthur (
Alfie Clarke) both learn that Ashley has dementia. In Bernice's salon, Gabby discovers a sex tape of
Kerry Wyatt (
Laura Norton) and
Dan Spencer (
Liam Fox) and she shares it online. Bernice discovers Gabby is responsible for leaking the video and Gabby is forced to clean at the salon. When Bernice refuses to let Gabby get her eyebrows done, Gabby draws them on with permanent maker and Bernice does not allow her to go on a skiing trip. When alcohol is found, Ashley suspects it belongs to Laurel, but it is discovered that it belongs to Gabby. Gabby confesses to Ashley, who reacts angrily to her underage drinking. Gabby develops feeling for friend
Jacob Gallagher (
Joe-Warren Plant) and goes on a date with him. Jacob later tells his father,
David Metcalfe (
Matthew Wolfenden), that Gabby and
Lachlan White (Thomas Atkinson) broke into
Eric Pollard's (
Chris Chittell) house and took his ring. When Ashley discovers what she has done, he tells Bernice that he wants Gabby to live with him full-time. Gabby overhears Ashley and his wife,
Laurel Thomas (
Charlotte Bellamy), discussing discipline methods, with Laurel suggesting boundaries. Gabby and
Liv Flaherty (
Isobel Steele) break into
Victoria Barton's (
Isabel Hodgins) house and take her clothes. Ashley and Laurel find out that Gabby is responsible for the robbery, as well as discovering that she has stolen
Sandy Thomas' (
Freddie Jones) pension. Gabby fails to apologise and Ashley reports her to the police. Gabby admits to Ashley that she is scared that he will die and they make up and Gabby apologises to her family. Laurel later gives birth to Gabby's half-sister,
Dotty Thomas (Tilly-Rue Foster/Ellerie Carroll). Laurel decides to move Ashley into full time care, upsetting Gabby and Arthur. Gabby accompanies Laurel to take Ashley to his care home and Laurel reassures Gabby she can still live with her as she still sees her as her daughter. When Laurel is told that Ashley is not responding to treatment and that the family should start saying goodbye, Gabby stays with Bernice, struggling to come to terms with Ashley being set to die. She wants to say goodbye to Ashley, but he dies before she can. After Bernice receives a call about her ex-husband being ill, she makes the decision to leave the village to be with him in Australia. She takes Dee Dee with her, but insists that Gabby should stay behind so that she can complete her education. Gabby begins to feel lonely, and feeling that Bernice's boyfriend,
Liam Cavanagh (Jonny McPherson), and his new girlfriend,
Leyla Harding (
Roxy Shahidi) are responsible for Bernice leaving, she vandalises Leyla's wedding planning business, Take a Vow. Gabby begins attending university, but comes to the conclusion that she does not enjoy it, and would rather be working to earn money. Leyla later discovers that Gabby is behind the vandalism, and rather than reporting her to the police, she feels sympathy for her situation, and gives her a job at Take a Vow. Gabby grows a strong affection for Leyla and ensures that she is in her company as much as possible. Gabby sees Liam chatting with his colleague
Meena Jutla (
Paige Sandhu) and decides to set the pair up. She orders a bouquet of flowers to Meena's house, with a note signed from Liam, in order to trick Leyla into believing that they are having an affair. Leyla initially believes that Liam has cheated on her with Gabby's encouragement, but the pair later reconcile. Liam suspects that Gabby is behind the prank, and contacts a flower shop, who confirm his suspicions. He then begins to blackmail Gabby into spending less time with Leyla, threatening to tell Leyla the truth. Leyla then sees the pair in a heated discussion, and assumes that he is grooming her, which Gabby does not respond to. Liam pleads with Leyla to see the truth, and when she realises that Gabby has become obsessed with her, she fires her from Take a Vow. Liam's daughter
Leanna (
Mimi Slinger) vows to make Gabby's life a "living hell" due to her nearly ruining Liam's life, and attempts to get her fired from her new job at the Hide restaurant. Gabby's boss
Jamie Tate (Alexander Lincoln) defends Gabby, and Gabby develops a crush on Jamie. The pair later have sex, but after Jamie insists that it meant nothing and that he likes
Dawn Taylor (Olivia Bromley), she decides to take revenge. She hides
Bear Wolf's (Joshua Richards) wallet in Dawn's bag, which gets her fired from the Hide. Other Hop boss
Kim Tate (
Claire King) sees what Gabby has done on CCTV, but decides to mentor Gabby, since she dislikes Dawn and sees a spark in Gabby. Gabby later discovers that she is pregnant, with Jamie as the father. She reveals the news to Jamie, who is disgusted, while Kim is supportive and allows her to move into her Home Farm estate. She later gives birth to her son,
Thomas Tate. ==Reception==