First of all, hang in there.
I can't give you advice on what to do but I can share with you what I would do. If you have $70,000 invested in the house, that is a lot of money. When you know exactly how much you are going to be getting each month, think about refinancing both mortgages into 1 even if it means getting an FHA refinance loan. As long as your ex will be paying for at least 3 years, that can count as income. Workers comp is a little more tricky but a good lender can walk you through it. And FHA is the lender of choice these days. The rates are low right now and you may find that an FHA refinance is affordable for you. Your local bank can probably help you with an FHA loan and their fees will be reasonable.
I hope this helps you at least see another option.
Rosemary
Editor - The Home Ownership Site