I'm not going to lend money to my mother in law
Why do you not want to lend her some money? Do you not have trust in her?
I'm sick and tired of supporting her and it seems like she is never going to learn.
I'm sorry your mother in law is taking such advantage of you, it is good you are finally standing up to yourself. She is wrong for taking advantage to how much you give her, and she should realize that she should be thankful and get back up on her feet herself.
Well I bloody care. I'm so broke that I'm stealing my kids shits.
I understand and I think that you are doing the right thing. People do need to learn how to manage their own money.