Greta/Skoll
A. One of the sexy forest times. Greta, by this point, was pretty sure it was impossible so she doesn't think it could belong to a wolf when it does finally happen, but there's been no one else. But she also doesn't know which of the three wolves the baby belongs to. She wants to get rid of it - she's scared it's going to be a monster - but the wolves decide to take care of her through the pregnancy as they hope it will be a monster. If they could knock up human women and make wolf-men like themselves it would make a pretty great pack. But when the baby is born it's just a regular little girl.
B. Rose
C. 1. Well, she's not ENTIRELY a regular little girl: she's quick and she's wild and she lives her whole life in the forest. She becomes something of an urban legend, with people talking about having seen a wild girl out in the forests. 2. Greta tries to give her some civilizing influences - she learns to speak and she can pass among humans like one of their own, but she's always more beast than human. Greta loves her anyway. 3. She expands the path further, having her own children by the Norse wolves, but none of them are ever strong enough to reach adulthood.