[He doesn't stop petting her, but he does pet her a little confusedly for a moment. Out of his mouth pops the nonsense:]

That is okay, I have a lot of yang energy.

[Because, look, he has had to sit through many theory classes. He even took notes. The idea of half-dead sends a spike of alarm through him, though.

He pulls away, but only to put his hands on her shoulders and to peer into her face, searching for what, he has no idea. Ghost traits? Expressions? He has not planned that far ahead. Her shoulders are warm under his hands, so it seems to him that she is less ghost than she is human.]

You look mostly alive. It is not going to make you die in some strange way, is it? [Because honestly that is what is important here.]