Slough of despond.
Makes me crazy, and I don't know your sister.
I was a spoiled brat for many years, knowing who was the chief resident, knowing those with the best reps in the community... even though I was a lower middle class person, albeit with insurance. When I got breast cancer, I had superior and very quick advice. But I always knew I was lucky.
I'm on the other end of the stick now. Still, I'm not sure the care I'm getting is so much worse than the care most others are getting, even with super insurance.
It is a puzzlement. I do remember the docs caring and arguing about details.