I have to say I was pretty surprised when they just allowed ol torchface to just walk on by. Even had a little chat! I'd anticipated an attempted mace to the face....

Meh, despite it being "maybe" a glitch, I'm going to guess that the Vampire is trying to hide from them. Two against one, isn't a very fair odd to that vampire. Them attacking you would result in you fighting the vampire along with the Vigilant.

Aren't they vampire "hunters" as in they hunt vampires... they are suppose to be friendly aren't they?