What does the fairytale-like preface show us about Marguerite? How does she feel about herself?

Maya seems to have been an imaginative child, as she envisions her "head [bursting] like a dropped watermelon" from trying to hold her bladder. She imagines a life as a movie star except she is a white blonde movie star. Maya has internalized racism in her view of the world. She dreams of being a young pretty white girl which, in her eyes, is the paragon of beauty.