[Berries and Cream]

Hi Laura You're not alone; I also have a sister with a disability, although different from yours. She has a learning disability. I know it's hard dealing with this, but please gather support from those you love to help you pull through. It's also very important to know that your sister shouldn't be harming you or your family. If the professional you are currently working with doesn't help, you have to go see a new one who will work for her disability. She should get some daily professional help/treatment. The best thing you can do with your mom and your sister is to stay strong or perhaps receive counseling or treatment.
Good luck
Sorry I wasn't much help
Stay strong Laura!!