Illyad remained hidden, watching and waiting. He didn't want to announce his presence too soon, as vampires had a keen ability to adapt very quickly to their situation. Or at least the ones he knew did. They tended to be resourceful, and Nyaira was no exception.
Of course, the difference was, Illyad had some powerful magic behind him. With a flick of his wrist he could reduce Nyaira to a pile of dust. Of course, that wasn't what he was going to do. His promise was to protect Victoria, not destroy her attacker.