The first thought that came to mind was that she was pussyfooting around him when she really had no reason to. He wasn't going to attack her unless she pulled the first punch, and he doubted that he'd be twitching at all if she did. "No, it doesn't hurt, but it IS annoying to rely on a technique derived from someone else's DNA. And to answer your other question, I haven't tried cutting my hair, so I don't know if it grows back or not. Then again, I haven't bothered to take the time to look in a mirror when I'm like this either. Survival usually takes precedence over aesthetics. If I use what I've seen of others in this state as an estimate of my own appearance, though, I don't think I want to see it."
Lowering his head, he reached back toward her. "Give me your hand." Trust was something that had to be nudged along at times, and if it meant that he gained an ally out of it, he'd temporarily drop the barriers around himself.