"Oh, it is, but I didn't have better options available and it is a helpful and necessary field and - yeah."
He produces a list.
"Okay so the murder is kind of a problem, but it looks like it might be able to be avoided. The mating thing is, um, frankly kind of horrifying. ... And vampires can't have kids."
"I mean. It's - one thing to look at my prospects and laugh and then go back to changing bandages, it is another to decide to never ever be able to have kids."
(Reading her is becoming easier. It's almost like she's familiar to him.)
"The murder I can actively stop. It's concerning and if I killed someone accidentally I don't think I'd forgive myself, but it's in my control. I can account for it and handle it. The mate thing is - I'm still going with horrifying, but I have the strong belief that anyone I could hopelessly fall in love with is not going to be a twit about it, which - assuages my concerns somewhat. They're not gone but I'd put up with it for immortality." Pause. "So yes, it does outrank both, it's just. No kids. Ever. I'm not desperate to be a mother, exactly, but I don't want to forever lose the chance to bear children if I can help it."
"Is definitely an option on the table, but it's still lessening my available options. And I might discover I want to experience the miracle of childbirth."
"Okay. .... One of the vampires is a doctor. That might be relevant. I don't know if that's at all possible to, to mess with, but he is a vampire doctor who's probably a bit ahead of traditional doctors on account of the sheer amount of experience. And how he doesn't need to sleep." Pause. "Or, uh, you could have a kid before you turn?"
"Not anytime soon." Pause, consideration. "... I might talk to the doctor."
"... I embrace my future liquid diet from animals only," she pronounces, after a pause. "On consideration I don't find adoption objectionable, just. The option thing."
"Good news," he says. "I heard that 'you could try' loud and clear, sibling telepathy is in working condition."
"Let's not. I could kill someone." Pause. "Actually, from what it sounds like, one vampire dealing with a newborn is not enough for safety."
"Mm. Yeah. I was thinking along those lines already, though we could go find some extremely out of the way place of the world if that falls through. I'll ask vampire friends about it when I go to visit."
"Vague later, I just got here, and have a shiny new sister. And, I don't know, need anything heavy lifted?"
So it turns out that Blair actually likes his sister. He is gently re-informed of relevant forgotten history, kept away from the neighbors for fear of being recognized, and is informed that he needs to be very careful about watching when he breathes, because his sister is in fact a nurse. Blood is occasionally involved with this.
Despite this hurdle, he does not eat her, or any of the neighbors, or anyone else. He eats a lot of deer, a bit more often than is really necessary. He is a safe vampire. Well. Okay, maybe not safe, but not randomly murderous. He will choose to be dangerous. In certain conditions. And then when he chooses not to be dangerous he will not be dangerous. This is a good system.
Weeks pass; Yvette foresees leaving England eventually, if not immediately, and has to prepare for the eventuality. This involves selling things that she had but won't need when travelling, saving up money, informing her landlord, so on.
Blair takes the time to introduce himself to the nearby covens - they find him sort of quaint on account of his diet and unobjectionable. He asks that they not eat people in the town Yvette lives in, because he is planning to spirit his sister away (not in England, he clarifies, they won't have to worry about a newborn) to be turned and it would be upsetting to have her be eaten before that. They are a bit nervous about the potential newborn, but if he is not going to turn her in England it's really not their problem, and avoiding one little town is easy enough.
In his admittedly large downtime, he pokes at his power. He gets a better feel for how to find certain types of people, and gets a feel for how long it takes for him to reliably track a person, and what way's best to get a good signature in his little person database. Smell is awful for anything but finding the specifics of where the person is. Sight's better, but not if he just studies physical appearance; he needs to watch for their mannerisms, their quirks, their body language. Listening to them is definitely on the right track, but just stalking them and hearing them speak isn't the best option. His most natural instinct of 'walk up and talk to them' is, by a long shot. Regardless, he definitely needs to pay attention to them as people, not just - targets to be hunted. This is fine by him, actually.
And then he's grown a bit restless and all of Yvette's things that can be taken care of without a date that she sets sail are taken care of, and he bids his sister goodbye and goes back to America to find and talk to the Cullens.
They're no longer in Wisconsin. This isn't a problem, he's a tracker, but it is noteworthy. He follows their signatures to the state of New York, and then to Rochester.
They probably already know he's there before he knocks on their door, but it seems polite.