Lassie, I wanted to back up everything said in this topic...I don't think I can add anything that hasn't been said.
I cannot believe your mother reacted as she did to your attempt...how on earth could she be so callous?
If she truly behaves this way toward you, she isn't worth your time nor your worry. Try to get along to go along, but take solace in the fact that you will soon be able to be on your own.
Take care, and if you need to talk, my PM box is open.