Shirley's father introduces her to Daisy, his new girlfriend, and Daisy's daughter, Sofia, who is now Shirley's stepsister. Shirley's father pressures her to be nice and show Sofia her room, but Shirley refuses, claiming she has homework. Alone, Shirley reveals she can't get along with Sofia because every time she sees her, she remembers 'that crazy night.' Later, Shirley learns Sofia is not only her new stepsister but also a graduate advisor at her college. Sofia confronts Shirley, reminding her their parents want them to get along, but Shirley resists as Sofia makes a physical advance. The moment is interrupted when their mother calls them for pie, leaving the tense dynamic unresolved.