Sounds like you need to reach out to some agencies for help. Being in a small town, maybe there is nothing there and you will have to go online or larger for help. I am thinking a support group for family members of alcoholics might help. Not sure if there is such a thing for family members of people with bipolar--there are certainly the forums here. A legal aid group migt be helpful, to see exacly what faces your brother and mother with regard to his medical debt. If she left the house as collateral for payment of part of his medical debit, she would have to pay that portion of the debt or I would think it possible that she could lose it. If she did not, then I'm not sure how her house would be involved in his bankruptcy. I think people are normally left a residence when filing for bankruptcy.

So sorry your family is facing this struggle. Hope things go better for you soon.