Why don't you speak with your attorney about you moving back into the house and getting an order that she cannot move back in? Why are you assuming you are going to lose the house? Start fighting for your rights to the property and stop letting her dictate (from another state, without a court order) what you can do!
"I owe nothing to my brothers, nor do I gather debts from them. I ask none to live for me, nor do I live for any others. I am not the means to any end others may wish to accomplish. I am not a tool for their use. I am not a sacrifice on their altars." Ayn Rand