Daisy recounts for Nick the birth of her child. She confides in Nick that she was on her own ("Tom was God knows where") and she was feeling abandoned. When she finds out that her child is a girl, she responds, "I'm glad it's a girl. And I hope she'll be a fool--that's the best thing a girl can be in this world, a beautiful little fool."
This story shows Nick and the readers how bitter and negative Daisy is, despite her carefree attitude. She is angry at Tom for leaving her alone then, and her cheating on her now. Mostly, she's upset with herself for not having the nerve to do anything about it. On first look, Daisy seems to have everything, but she is also one of the most miserable characters in the story.