He's beyond the point where he would have shrugged off her help out of pride or suspicion. He doesn't really believe that she's causing this any longer, not after he woke and felt what that room was doing to him.

He lays his own hand atop hers and accepts her influence fully, practically clutching onto the force of it. This is something that he can use. It hasn't fixed things, not yet, but it's enough of a mitigating power that he unclenches his teeth and heaves out a sigh. "What are you doing?"