What characters serve as positive role models for Maya?

Although Maya's early life was difficult, she had many positive role models. Among them are Bertha Flowers, who introduces Maya to the world of literature and impecable manners; Miss Kirwin, who teaches her self-expression and models what it means to be compassionate; Vivian, Maya's mother, who exemplifies the strong, independent woman, as well as what it means to be a mother; and Maya's grandmother, who illustrates the need for discipline and self-respect.