One of Eilis’s fellow residents in Mrs. Kehoe’s house, Diana is a young woman whose mother is Irish, though she herself has an American accent. Like Patty, Diana is “man-mad,” which annoys Miss McAdam, Sheila Heffernan, and Mrs. Kehoe. At first, Diana and Patty try to make friends with Eilis, but Eilis chooses not to go out with them and their friends—a decision she eventually regrets because it aligns her with Miss McAdam and Sheila.