Firekeeper's Daughter

Why did Boulley choose to divide up the book by the four cardinal directions? How are the directions symbolic of Daunis’s journey? 

How does Levi act as a foil to Daunis? In some ways they are almost twins (hockey, their dad), but in others (their tribal status, financial status, family heritage) they are very different. What does Levi reveal to Daunis about herself when she finally sees who he has become?

Daunis begins and ends the story with her name. How does her relationship with her name change throughout the novel?