Well I can tell you what worked with my exW who is in MLC. She spewed venom for over 2 years, I basically only interacted with her when it came to things with my D10. She would not even acknowledge my existence. Well the D was final in 12/05 and she still was very angry person, when she would call me about something I did or didn't do I validated her but certainly did not let her treat me like a doormat.
She started to soften around 8/06 and we are now sort of dating.

She has told me she would never have thought about dating me in a million years but because I was always there for her as a friend and treated her with respect she noticed the changes I made in myself.

Treat her like a business partner, respect her, listen to her and above all be the best father you can. That scored huge points wiht her.

Good luck