How To Sell A House With An Active Alcoholic?

I’m in a nightmare situation with my ex wife. We divorced in July and are supposed to sell our house. She was supposed to vacate the house in the summer but didn’t leave until the end of September. She was supposed to pay for repairs, as stated in the divorce decree, but refused so I stupidly paid for them to get the contractors off my back. She’s draining my savings through these actions. She impedes the process by not accepting any offers and I worry that anything she signs will be dismissed because she can say she did it under duress because she’s always intoxicated or on pain meds. She has stopped paying the mortgage. How does one go about disentangling from an addict? I’m in absolute agony and exhausted by this. I could do a forced sale but how can she sign paperwork legally while drunk?