Oh my goodness Judy, I can't believe he would treat his mother-in-law that way!
My family always just helps out for free, no matter how close we are. I just had an uncle, great-uncle, and my uncle's friend putting in my laminate for the weekend, and they were happy that I stocked the fridge with beer! They asked for nothing, but of course we are willing to do favors for them as well.
Diana gave good advice. Maybe after this work is done, while you're not needing anything else, you could have a talk with both of them and explain that you know he does great work but you feel that the money issues put a strain on your relationship and hopefully you could just agree to keep work and family separate. I don't know if they would feel okay with that but I think it might be the best option.
I will keep my fingers crossed that soon you will find a great man to share your life with, and preferably one who is handy with fixing things around the house
