I'm going to cut off financial support to my mother
What made you decide to cut her off financially?
I'm broke, the damn old hag!
If you are having financial issues, it's understandable that you can't support your family as well. But, give them some notice and be honest about why you are cutting off the money.
Screw her, I'm gonna do it whatever anyone else says. I'm in charge around here.
I do not blame you for cutting her off. It is okay to want to protect and save up your money.