Who is Nancy from Dogsong and what is their importance?

Nancy is another character who straddles the Old and New Ways. She is also the fulfillment of Russel's dream. Nancy represents Russel's future as a man and a provider. Nancy is probably around the same age as Russel. Perhaps she is in her late teens or early twenties. Nothing is known of Nancy's past or her home village. What is known is that Nancy is convinced of her sin by a Christian missionary and she leaves her home as a result of shame.