Daughter wants to move in with her mom

You need to speak with a pro. Not a bunch of gear heads. As with everything our experiences and situations are all a little different. What works for some doesn't work for others, and can make matters even worse. If things are as you say they are, going to court might not be a bad idea. Your situation seems to be a lot better than your ex-wife's situation, and judges tend to take that into consideration. Get some professional counseling first, though.

You asked for GOOD advice and here it is. ^^^^^^

Don't waste it.