Kathleen,
I am so sorry your brother and his wife are commiting this illegal, irresponsible, selfish act with no regard to your mother's well being while you are spending every ounce of your well being taking care of her! I know that God will deal with them in his time, and they will pay the price. You hang in there...take care of you through this. I am glad your mother has had some improvement, please keep us posted.
Thoughts and prayers are with you!
Mer