When they got to the shack, Harry walked around it to the back and cast a spell. A large, wood-framed window appeared.

"The wolf will be able to see out as well," Harry said to Aaron. "It is possible that could be agitating. If you think it is making things worse..." And then he gave him a trigger word to trigger the spell again and hide the window.

"And you come get me if there is any trouble at all. Do you understand?"