Traitor's Son — Hilari Bell

In Trickster's Girl, when Kesla's journey comes to an end, she passes the pouch and the quest on to someone else. She picks Jason, a native boy she thinks will be able to finish the job. But in fact, a family feud has cut Jason off from his traditional roots, and he is even more doubtful and resistant than Kesla was. But Raven, now a beautiful girl, is quite persuasive and manages to convince Jason this is something not only that he can do, but that he must if he wants to heal his family and the earth.