What is really disturbing to me is the utter lack of respect and anger my daughter has towards her mother. I know better than to try and change a 14 year old girl's mind so I just listen and validate.
Why on earth would your daughter's utter lack of respect and anger toward her mother be "disturbing" to you? It sounds like a perfectly normal, honest reaction toward a lying betrayer.
Is she not entitled to feel this way? Can she not see for herself what has been going on? Is she simply expected to ignore the impact of what her mother has put her and her father through?
I will never, ever understand why kids are not allowed to think ill of a sh!tty parent. It is the ultimate mind-f*ck for a child to be forced to doubt their own moral values just because mom is a p!ss poor role model.
I applaud your daughter for her strong moral code, and I am very pleased that you guys will be moving away to start fresh.