When sitting down with Michelle Pfeiffer to discuss the character of Lillian, Alex Kurtzman decided on a more naturalistic, slightly disheveled look for the role. As he described it: "this woman probably hasn't put on make-up in a year. She's been sitting by her dying husband's side and when we first meet her in the movie, that's where she's at. If we're too glamorous in this portrayal, it'll ring totally false." Pfeiffer agreed wholeheartedly and altered her otherwise glamorous image to play the grieving widow.
Michelle Pfeiffer tried to get a scene removed where her character slaps Chris Pine across the face. Pfeiffer felt that it would be difficult for her character to redeem herself in the eyes of the audience. However, the scene remains in the film.