Margaret was intending to keep Hamish Ascot's surprise proposal to Alice a secret. Though she had to reveal the plans to Alice after the Chataway Sisters spilled the beans about this proposal, Margaret explains that everyone had so much effort in keeping the secret. Margaret then tells Alice that when she meets Hamish during her engagement party, she tells her to accept Hamish's offer to which Alice becomes skeptic of this. Margaret felt unaware that her husband, Lowell is cheating on her with his "old friend", Hattie.
Later open returning to the real world after Alice decides not to marry Hamish, she explains to Margaret that she has decided to have Lowell to be Margaret's husband instead while she explains to Aunt Imogene that she needs to talk to someone about the delusions she explains to her.
- Although her married name is never revealed in the movie, the first draft of Linda Woolverton's screenplay called her Margaret Manchester.