Hi Seastorm,
What you're going through is draining and torturous.
It's the dark night of the soul and yet, a bit of light shines through, like reconnecting with your daughter.
If you can, perhaps you can give yourself a "vacation" from communicating with him, like give yourself 5 days of no contact with him (not even emails) or communicate with him only via a lawyer.
The idea is to put a shield around yourself to protect yourself from him and part of that protection is to avoid direct communication with him.
Do whatever you can to avoid or diminish upsetting yourself. Put yourself first, do whatever you can to give yourself peace of mind.
And yes, eventually this will end and you will be free of him.
Strength, courage and peace to you,
dazed