Well, she was weak but able to pull off strong spells. The colors in her outfit (blue/white) are reminiscent of Sypha's game colors. Her hair isn't quite as long as it was in game, but could pass as her. Her outfit is definitely more like a "costume" than what a normal villager would wear. I noticed that she has some cloth on her forearms that covers a triangular part of her backhand, with the point at the base of her middle finger. Looks like a design that would be fit for a sorceress to support the flow of magic released from her palms. And of course, the cross around her neck is a symbol of a church warrior in Castlevania.
She does seem like she's planning on letting Trevor storm the castle by himself. Perhaps she would stay behind and protect the village or something?