I think you are worrying about something that hasn’t happened yet and may not even happen. You can’t control where someone lives, so that choice is out. I doubt that you will really move just because she moves near you. You don’t have to do anything you don’t want to do. If “welcoming her with open arms” opens up stress and turmoil then don’t do it. But you do say you like her and she is a sweet lady, so maybe you could give her some of your time, maybe someone to just shop with, get her out of the house and away from the alcoholic.