DD1 5 years old went to friends house today. behaved beautifully apparently - then I got there! She refused to change back into her clothes (they'd been dressing up), had to struggle with her for over half an hour, and then she was being very silly, wouldn't say thank you for having me - all very embarassing. How do you deal with this - as I know its very common, always happens when her friends come here too. but just find it difficult to deal with when you're in someone else's house....