It's the change honey. This even happens to me when I go on vacation or my husband goes out of town...like today. This is constant for me, and my kids know when something is going on because they act like crazy people, and I love them very much. But they are wako on my bad days. Saying things is hard for me too...because I'm afraid to rage, and don't know how to ask for help before that at all. If you live in the UK right now, and you are from the US or another country...look up expats in your area who are of your same culture...it may help. But for sure ask the mom how she would like you to set boundaries with her daughter. I'm sure she would be more than happy to help you do that. Also let her know you miss home and stability...she'll probably be empathetic to that as well. She is a mom. =)