Hi Clydesrani
The last time I posted on one of your threads I managed to upset you (which wasn't my intention) so I'll start off by apologising.
You asked a question: "Was he 'out of order'?"
My answer: Absolutely. 100%. Totally. (I'm a great believer in giving youngsters responsibility but simply to 'dump' a 12 year old like that is completely wrong).
You ask for advice. (Since I'm probably not 'flavour of the month' with you, you might not want it from me but, for what it's worth, I'll give you my honest opinion anyway):
You've got to face the fact that it's simply 'not going to work' between your daughter, your ex and his fianc�e. Whatever arrangements, and agreements, you might have in future, you'll never really trust him not to repeat his actions, so it's pointless even considering sending your daughter to stay with him.
Of course, your entitled to seek a bit of time to yourself (or with your boyfriend) but you'll have to look for other arrangements. Perhaps your sister can help out?