Your sister is also lazy, and has no sense of responsibility and self-motivation. She thinks she is selfish. I advise you not to care about your family, because family means you have to help her and pay for her. And she herself is as penniless as a miser. She doesn't have money to raise children because she is lazy and doesn't work. It's your business to have money, and her children are raised by herself. You don't need to give her money. If she says she can't afford to raise them, she won't have them. If she does, she will raise them. It's her business. Don't think that she has pity on herself. She asked for it and can't blame anyone.