

Lindy's plan was to reunite with Kerry, as she was her only child now that she can't have any more of her own. Once Kerry arrived and retrieved the gun, Lindy revealed the entire truth: Kerry was her daughter that she gave up for adoption. When Charlie arrived and came out to the backyard where Kayla and Lindy were, Lindy turned to him, allowing Kayla the opportunity to tackle and disarm her-though not before the gun went off and Charlie was non-fatally shot in the shoulder. She later pointed her gun at Kayla and revealed her plan to kill her and make it appear that she committed suicide after killing Marlow. Lindy returned to the house and held Marlow and Kayla at gunpoint, leading to a chase and search for the women that saw Lindy strangle Marlow to death with her whistle. Lindy later approached Kerry at her party, where she gave her a snow globe as her present however, once Kerry noticed that Lindy had Kayla's cell phone and was sending texts on it, she left the party and followed Lindy, accompanied by her date Charlie.

Lindy then decided that she had to get rid of Kayla, and afterwards, the deranged madwoman abducted Marlow from her house and returned to the gallery, where she knocked out Kayla, after which she left both women tied up at her house. However, after Marlow revealed the truth about her affair and that Lindy blackmailed her, Kayla fired Lindy as their party planner, angering the villainess. This lead to Kerry officially learning from her parents that she was adopted by them, causing a rift that Lindy planned to lengthen. While Lindy and Kerry were working on a collage of childhood photos of the latter, the former was quick to point out that there were no photos from Kerry's birth. Lindy pointing her gun at Marlow and Kayla Later on, in an effort to keep Kayla separated from Kerry, the evil Lindy appeared at Kayla's art gallery and attacked Shanda, knocking her out with a hammer and taking a painting from the gallery, doing so after revealing to Kerry that she couldn't have children during a conversation. After taking photos of the pair, the villainess appeared at Marlow's home and blackmailed her into allowing Kerry to have the rally team at the party. After Marlow turned down Kerry's proposal to have the pep rally team at her Sweet 16, Lindy tracked Marlow and discovered her in a romantic embrace with Coach Green, the school's married basketball coach. She found another obstacle in the form of Marlow Meadows (Kayla's old schoolmate and Kerry's pep rally coach), as she didn't like how strict she was with Kerry. With Dulcie out of the way, Lindy became Kerry's planner, and relished in the time she spent with Kerry while performing her duties. Lindy later entered Dulcie's home, but was later ejected, only for Lindy to return and bludgeon Dulcie to death with a stone statuette. Seeing Dulcie as her top competition, the villainess went to Dulcie's home and made multiple attempts to buy her way into replacing her, only to be turned down every time. Following her introduction, Lindy listened in on a conversation and heard Kerry speak highly of her, while Kayla preferred Dulcie.

Upon learning that Kerry was turning 16, Lindy appeared to Kayla, Kerry, and Kayla's assistant Shanda and applied to be Kerry's party planner, doing so after another planner, Dulcie Lowe, gave her own application. Prior to her husband's murder, Lindy had used his connections to find her long-lost daughter, learning that she was adopted by Kayla and Jason Anderson and named Kerry.

Following Griffin's comment about his mother making him sign a prenuptial agreement, Lindy turned heel by shoving her husband down a flight of stairs, killing him and screaming in anger afterwards. Her suggestions to adopt and hire a surrogate were callously turned down by Griffin, leading to an argument that saw Griffin speak about leaving Lindy, who lashed out at him in response. The film's opening saw Lindy hosting another of her parties, but afterwards, she was in her bedroom with Griffin fretting over a doctor telling her over the phone that she still couldn't have children. Senator Griffin Shores, but her attempt to become a mother again resulted in not only a miscarriage, but an inability to ever have children, as she was diagnosed with secondary infertility. In adulthood, she became a party planner, as well as the wife of U.S. Lindy Shores' backstory revealed that she gave birth to a girl shortly after her 16th birthday, only for Lindy to give up her daughter for adoption under the orders of her mother.
