In one story of mine, the protagonist is a physically disabled teenage hacker with no knowledge of the supernatural, who gets approached by a child vampire looking for help finding pedophiles to bite. I'm really struggling with one thing - how this kid (and his mother, who is in on it all) accepts that vampires exist. He starts out deciding that he dreamt this vampire up (the vampire visited at night, when he was half-asleep). This falls through when his mother sees the vampire too. Then they fall upon the theory that the guy is a government agent with weird enhancements. But gradually they'll start realizing that he's way too old (2,000 years old), has no affiliation with the government, and some things he can do are very hard to explain with modern technology. I'm worried because most books that have a person discovering the supernatural have them accepting it way too easily. So I want to make sure it's a more realistic adjustment. It'll be hard because this kid is a real sciencey guy, and a lot more ready to believe in conspiracy theories and such than in actual supernatural stuff. (He's going to end up realizing that magic doesn't contradict science, it's just another law of nature.) But he will eventually figure out, since at some point he's going to become a vampire himself.