He didn't know what the harp was doing, but he knew it was bad. Was it drawing her to it, or was this just Annie? He put his hand back on her shoulder. Patience. He was good at that.

"I don't want the magic to hurt you," he said. He didn't know what else to say because he didn't know what she was feeling. The compulsion to play could be a coping mechanism or a component of the spell, and he didn't want to mess with either of those things. If he had to, he would pull her away and deal with the result, but for now he'll try the gentler approach.