There are no angle with which she would see the vampires and we would see her without teleporting her to the other side of the room. I guess it really pays to have peripheral vision.
Well her spirit was made by Hel. Beyond that I guess she could switch toany god that would accept her (or the Elemental Negative Energy or whatever) but I don't see why she would do so.
EDIT:
Every vampire assumed another one was dominating V. Honestly they alreaddy are pretty lucky tha (apparently) no two vampires tried to dominate one target at the same time.