There is a classic book very well regarded in my culture called "The slave Isaura" and tells the story of a heroine, Isaura, who is a white girl, the daughter of a white man with a black slave. Isaura, despite being white, is the daughter of a slave and therefore, also a slave.
This story takes place in colonial Brazil and Isaura goes through many embarrassing and humiliating situations, where various evils are done against her, proving that slavery was not a matter of color, but of superiority and oppression.
Despite all adversities, Isaura is a stark example of good behavior. Ea is beautiful, modest, virginal, caring, polite, treats everyone with kindness, even those who do not deserve it and never, absolutely never complains about any treatment she receives.