Were seperated and she's still in the home

My name is on the mortgage and she can't aford to refinance and take my name off, I can't buy my own home becouse I'm still on the mortgage. The mediator wrote up a document and it says I only get one third of the profit on the home when it sells and I am responsible for 50% of any repairs over 500.00. The house is underwater and the mortgage is into its 15th year out of 30. I have asked her to remove me from the responsibility of repairing the home and I would leave my name on the mortgage. She is refusing. She is also getting 100% of the tax right off and I am paying 1k a month for child support. We have three kids and they live in the house, I don't want to kick them out by forcing a sale but I don't want to be responsible for her house. If we get seperate attorneys can a judge force me keep my name on the mortgage? I know it doesn't matter but she had an affair and asked me to leave the home:(