ND, Happy belated B-day. I'm so sorry for what you are going through. She has to be one of the cruelest examples I've seen on here. I wish there was someway you could get her out of the house, she needs to see that the grass is not always greener.
I think you need to read Love Must Be Tough by James Dobson.
Life's challenges are not supposed to paralyze you, they're supposed to help you discover who you are. -- Bernice Johnson Reagon