It's like, you work on homework for a little bit and then you miss out on the most important things. Speckla's a vampire? And no one's really asking the most important question: do you slurp down blood? Get the urge to bite some necks?
Technically, it wouldn't violate the vegetarianism as long as you didn't kill any animals, just turned them into vampires as well. Like Bunnicula. That silly little vampire rabbit.