A bit of background; my dear friend died 18 months ago leaving a (then) 13yr old daughter who now lives with her Dad. This daughter and my daughter were, and are, very good (sometimes 'best') friends and classmates.
Now they're both older, they are still at school together still have the same group of friends as well as other, more separate groups of friends. They are still fond of each other but have different interests and likes. So far so good.
DH & I are names are named as carers for DD's friend should anything ever happen to him. So I feel protective toward the girl, also promised her Mum we'd watch over her.
SO to the dilemma. Girls Dad had to go away for a couple of nights with work & asked whether she could stay with us. This would mean her coming here from school with DD for two nights and going to school with her for two mornings. We have spare room so agreed on the spot. When I told DD she reacted badly and went into strop saying couldn't girl go to someone else, she didn't want her here, she'd have to look after her etc.etc.
I said I didn't think much of her attitude and left her to get over it. Girl came - all was well. The two girls spent a lot of time giggling in DD's room. Didn't seem to be any issues or problems.
Have just said to daughter "so was it as bad as you thought?" & she replied that she never wanted me to do that again & next time i should say 'no' & girl should go to someone else because she just got so 'fed up' with girl by the end. I am a bit horrified by her callous selfish attitude - the girl has no Mum FGS, and don't quite know how to get across to DD that I have some responsibility to girl and so would probably not say 'no' if asked again. Let alone tackle DD's stinking attitude.
Am I being too tough on DD, or should I kick her up the bum (metaphorically)?