Question on The Great Gatsby?

During a dinner party, Daisy and Nick have a private conversation about her daughter in which she offers the strange comment: “‘I’m glad it’s a girl. And I’ll hope she’ll be a fool—that’s the best thing a girl can be in this world, a beautiful little fool’” (17). What does this response reveal about Daisy’s character? Secondly, what might this response reveal about a woman’s role during the 1920s?