My mother let her son and wife borrow 100k to buy a house in Michigan. My mom wrote a document with a payment plan for 3 years. After 3 years they had to take out a loan to pay her back. Besides the payments they had to pay the property taxes which still have not been paid.

The paper work is signed by both parties but not notarized. It's been over 4 years and there has only been a few payments, and no property taxes have been paid.

The deed for the house is not in my mother's name it is in theirs. She was just the bank.

The son left the house a few years ago. The wife is still there and moved her parents in right after the son left.

My mom went to lawer and had an offer of 5k to each to sign over the house so she can sell it. The son never responded and the daughter-in-law said good luck getting me out of this house.

My mom is worried for the unpaid taxes what the state is going to do since she owns the loan.

Is there anything my mom can do with out costing a ton of money?