He's with her. Honestly, he's probably never left, if he could help it. The girl is important to him -- one of the few people left here he has. He will guard her with his life, if necessary. It isn't that he believes she needs protecting. She's scrappy enough.

But this is his duty.

He must.

So he prowls the hallways behind her, looming, having swapped out the knife for a rolling pin -- at least he can bludgeon someone, or something, with it.