"I'm not," I say, because I can't help arguing with him, even when I'm half convinced he's dying. He seems to be breathing easier, and I let my wand arm fall, half feeling like I want to keel over myself.

"I don't know what I am," I say after a minute. I seem to be saying that to a lot of people, but it's the truth. I cock my head and study him.

"Are you okay now?"