I'm the one pointing out to a teenage kid that there are plenty of vampires on this island who like to think they can control themselves when they can't. Am I one of them? No. Are you? I don't know. Do I personally know some? Yes. Are you willing to let her find out which are which by getting her throat ripped out? I don't really care, but I'm not.
She's a kid and she has family that love her and want to keep her safe. You can't blame them for that. I'd act the same if it was my brother or kid. You've been alive for god knows how many years so grow up, stop being pissy and recognise that you're not the most important person in this situation. She is.