IF you got the house at the RIGHT price (of course marriage is more important than a property) you might use it as a half-way house, lease it to the city as a homeless shelter, rezone for commercial or partner with a charity.  

So let’s all do ourselves a favor and REMEMBER. this is a business and not a charity.

If they pay late, but always pay the late fees, they are usually OK to hold onto until their lease expires, then get rid of them.Your life will be better if you run like a business instead of a charity.

Then I drove to the airport for a charity meeting. 32 miles deducted for charity.

But if you do have someone, or find someone, or find a charity you believe in.

Honestly, the best I've got is try to find a charity to help with moving expenses and walk away from the house/mortgage.

Keep in mind you are starting a business not a charity.

I think it's great that you are trying to help her, but from the business side you may end up paying for a charity rather than an investment.I would get quotes from contractors on the different jobs that need to be done and then pay her that amount.

After that, you can begin to get creative.Using someone else's money is a benefit to you, legally you are in debt, the compensation for that use is interest, so charge and pay  interest fairly (unless it's a charity case).Interest needs to accrue from the first day of using the money (or equity) but when it is paid is wide open.

However, if you're looking for a way to get a tax benefit by donating your house to a charity that will then rent it back to you, or to family members, or provide some other benefit back to you, then you're asking for an audit and it's likely not legal.