I think everything they did was probably not needed. 7 months is not all that long to be off food.
How old is the snake? CB or import? Cage temps? What are you feeding her?
If it were me, I would throw a live gerbil in with her. They are rarely turned down. An african soft fur may work as well, but nothing works better than a gerbil in my experience. She is probably going to need live to knock her out of the fast. Usually once they take one meal you can go back to rats and they will get back to eating regularly. Good luck.