Take care A.Yin.
I would sell the house. ## is going to say something anyways, no matter what you do. All she wants is attention. Let her have all her attention with her 36 and b6 friends. They would smoosh her and make her feel super good about herself, you know. It is not even about the money, to her, at this point.
Just let your C6 take care of things. Don't go see any of his relatives again. Avoid them.
As far as HK. I don't think you can get away from the craziness. So... in short, it doesn't matter whether you are in Aussieland or HK. Think before you leave your C6. You need him during the first year. The baby also needs him during the first year.