QS- I'm playing this poker game right now too. I folded on a couple of things - our phone bill for one. I separated that account. At the time I was letting go and thought "why not."
But, my L has advised me not to separate anything without looking at big picture.
My H has tried to intimidate me to moving $$ to him, selling house, etc. My L told me there's absolutely no need to do that until the divorce is in full swing and we are in full negotiations with lawyer's present. If H refuses to give me $$ at some point, I will pay for immediate needs first (food, electricity), and neglect house payment. That will up the stakes for him for sure, as I'm sure he doesn't want to ruin credit. But yes, I risk losing my credit. But that's poker
Stand your ground . . .she can't sell the house without your signature.