One of the characters I went through Story mode with confronted Sophitia and it looked like she was wielding the Soul Edge. If I remember correctly, she was on the same team as Tira and Nightmare, and she was dressed all in brown and her weapon was brown.

I haven't gone through her story mode yet, but I do want to see what her final decision is. (Her mission from a God is to destroy the Soul Edge, but if she does it one of her children will die due to other forces)