When my adult daughter lived in our home there was a challange test. I provided all the houshold expenses, it was divided by the number of persons in the house to what their portion of houshold cost were, for example, our familys was $270 a month each. They used that figure to calculate her SSI.

There were months that she did not pay it,before receiving the SSD and SSI, the caseworker that called for me to fill it in told me when the money came to reimburse myself as they expected it in the calculations for me to get that portion.....It was a thousand or two maybe....

I would get the advice of an attorney to best protect yourself...and to ask if bankrumptcy is an option....also when divorcing is there a portion of medical bills the husband, would be required to cover.....
Many questions you may not think of they can advice the best to.
Good luck
Dianne