Gosh @Faith-and-Hope that sounds really complicated legally. Would he be bound by Australian law or international law, how does that work when he wants to live on the other side of the world?
I really hope that he doesn't use your daughter to soothe his guilty conscience, or is trying to prove to people on the outside that he is still a great guy.....she is not a pawn, or a toy. I feel for you.
I can still sense from your post, despite being stressed out of your mind you still have a lot of vitality @Faith-and-Hope. I am relieved that it didn't happen another 10 years down the track when your health and vitality may be a little less strong and could have really broken you for good. We are all embodied, and stress can break you. Trust people that have a stress disorder, they are real. I have a lot of health-regret some days how much I gave and gave and gave to breaking point. It was quite an experience to witness your mother in psychosis from baby-hood & be largely treatment resistant, hold her up through her trauma induced psychosis following my fathers suicide, only to enter my own psychosis a few years later when she was settled in Sydney and I could let go a little.......sometimes I wonder if I hadn't moved back home after my father died, I wouldn't be like this. I could still have a crummy little job, some form of a social life, routine and financial independence. I know given what's happened I most def would probably still be this way - but I think I am grieving a lot right now. Mainly my losses. Even though the timing for a divorce is never right, I think at least this way you have enough years left of health and vitality to enjoy the kids and see the grandkids grow. It would be horrible if he stole your health too, and we are all breakable.
I hope that you have fluent speakers of legalese and that you get the outcome your daughter needs for her well being. Its such a stressful time for you all, you needs lots of warm cuppas, hot showers and hugs from family and friends, Corny 
