I am so very sorry you are going through all of this, how stressful.
Do you have the resources to rent somewhere close to them? I have a friend who's husband has to start working at a distance. He bought a really nice camper and is taking it with him to stay in while he is there. I thought that was a great idea. Would that be a possibility? Could she come and stay with you instead?
Just trying to think outside the box here. Good luck to you, my heart is with you!!!