Who is the Moonwoman in the fairy tale, Deerskin?

Legend tells that Moonwoman was once a young girl raped by a rejected suitor and abandoned by her father; her story, then, has some connections with Lissar's. Hurt and angry, the Moonwoman ran away to the moon with her dog. Now she watches over the young, "particularly those who are alone, who are hurt or betrayed, or who wish to make a choice for themselves instead of for those around them."