my husband had RSD in addition to type One diabetes. My only siggestion is to get yourself to a specialist in RSD. We lived in Maine and went to Boston where we found a neurologist that specialised in RSD. They were able to alleviate the worst pain somewhat.
It is not for no reason that it was called "the suicide disease". For anyone who isn't cognizant -- he said it was like putting your hand on a hot stove and leaving it there.
Find out how to avoid the bone loss if possible.
The history is interesting -- first diagnosed after the Civil War in the US -- 1860s from the amputations. Now in diabetics, at least, it can happen after something as simple as a glancing hit on the corner of a counter or a deep cut/trauma.
My heart goes out to her.
Mim