Where we come from, sentient beings like higher vampires are a) really hard to kill and can only really be killed by another of their kind and b) tend to leave human populations alone. They don't need to drink blood and can survive quite fine without. After the Conjunction of the Spheres, those monsters - a catch-all term for non-humans - were pulled from their world to ours. They leave humans alone, they get left alone. What kind of monsters are there where you come from?
Oh. Well. That's good to know. Though why it needs to be done in a tavern instead of a brothel is anyone's guess.