Were all vets at the same clinic or did you go to another clinic? Sometimes a different clinic will provide a whole new approach and have better diagnostic tools. If you've done that, I believe I would get her looked at by my state vet school and where she can be fully evaluated. It sounds like her quality of life is pretty low right now and as you know better than most, she needs to get a diagnosis and/or treatment that will give this poor baby some real relief.
__________________  Jeanie and Tibbe One must do the best one can. You may get some marks for a very imperfect answer: you will certainly get none for leaving the question alone. C. S. Lewis |