In A Tree Grows in Brooklyn, Betty Smith portrays Francie as a mixture of both her mother and her father. Like her father, she has an appreciation for beauty. Like her mother, she speaks up for herself, and this is what frequently causes problems between Francie and Katie. Her family is poor, but Francie finds and takes pleasure in the little things of life. Frequently found on the fire escape, Francie is an observer of life. She feels a sense of home for her Brooklyn neighborhood, and through her observations of them, the reader feels empathy for the other poor residents who live there.
Enotes has some great resources.