How does Portis want us to find her attitudes?

Read True Grit and write about : ¨Early in the novel, Mattie observes that, “There is no knowing what is in a man’s heart,” but her frequent judgments about other people, many of which are negative, seem to contradict this insight. Do the events of the novel tend to reinforce or undermine her assumptions about others? How does Portis want us to find her attitudes?¨ CER, minimum of 300 words