Hi Tracey- So sorry to hear about your sister. You sound like a wonderful, very caring, and thoughtful sibling. I'm sure you are a big comfort to her. Yes please have her see the top Drs.in this feild from the hospitals that were listed to see if there is a treatment they can recommend for her. It certainly sounds like she's absolutely been through the ringer with all of this. Your family is in my prayers.
Kate