Edie,

This is an odd situation. Which vet are you seeing down here in AZ? I feed all of my boa's rats of the appropriate size as I believe they are much more nutritional. It strikes me as odd because I have never had a boa refuse a meal I am leaning towards internal parasites on this one. Boa's seem to be able to handle larger meals than ball pythons imo and seem to be much more hardy all around, leading me to believe Jo on the internal parasites or some sort of illness. Did you check around the mouth for a RI on her? Let us know what you find!

-Cliff