I live in another town and my sister is in her Masters program, has children and works. Our Mother wants us to take care of her without outside help. What do we do, we are both close to burnout, our Mom has end stage cancer, and is becoming more and more difficult, she is mad at everything we do, nothing is right or good enough. We are now taking turns every 2-3 days with staying with her, we don't know what to do. Help!!!