Are you close to a reputable veterinary school? I had a wonderful experience with the Virginia Tech Small Animal Clinic when I went with my friend. Their equipment is the latest, the staff extremely knowledgeable and owner friendly. Have you considered a second opinion if you're not satisfied with the info you're being given? Good luck with Molly and I hope she soons feels better and gets well. BTW, if the vet is reputable and can't come up with the answer they should be referring you anyway.
Labmomma X 2