For example, when Bill arrives for the birthday and before even saying hello to Margo, he speaks with Eve. This stirs something up in Margo, where we see that she is jealous. As a spectator, I could see his insecurity at that moment. As a 40-something actress, I believe Margo's biggest fear as she got older was losing the 20-something character roles to 20-something actresses. , like Eve. It was very clear when she told Lloyde that she didn't want to play Cora, a character in her 20s. She begins to explain that she is in her forties and that she doesn't need these roles since she will be married. She explains that she now has a life to live. Margo expressed her anxieties about aging in many ways. She was afraid of losing Bill to younger women, and of losing roles to younger actresses. I think ultimately people didn't take his fears seriously. I think the only time anyone might have taken her seriously was Bill, at the audition, after Margo found out Eve was her understudy. He somehow realized that Margo's insecurities were ruining what they had, and that's when he gave her an ultimatum. At this point, his fears pushed him away. I think Bette Davis' character kind of showed every actress' biggest fear. The fear of not being what your character is, of no longer being twenty years old, of having to be forty years old to play twenty years old.