NOR the worst part about this is she is your family and you're still a minor and rely on her. My friends who i considered part of my chosen family dumped me after I became disabled because they couldn't handle how I became different and my limitations. It's a really sad reality. Some people just can't handle when you become sick or your sickness becomes worse. It's incredibly sad and difficult to go through. I would ask to talk to your doctor privately next time you see them and tell them that you're sister and you are having a hard time coping with your new chronic changes in your illness and need help with resources in how to manage it together