"I am a terrible person to stay with," Alli says matter of factly. "I mean, I wish I could help, but- yeah. Go with those two, if you have to. If we have wards, I'd be shocked, and even if we do Mum will have forgotten a step or meet a friendly stranger and decide they must be harmless or something else equally airheaded. For the love of Merlin, do not entrust her with your peace and quiet for the hols. Guaranteed, she will fail."