I think you should take her somewhere else as well. This vet did not seem to take as much action as this situation requires.
A few things to hopefully help:
If she has a favorite vegetable, make it extra wet, cut it into small pieces so maybe it’s easier to eat, and try offering it to her.
If she has a favorite type of hay, bring it to her, fresh, repeatedly and see if she’s willing to eat some strands.
Do you have simethicone (baby gas drops)? It wouldn’t harm her to take a dose to relieve any gassiness she may be having. It can be purchased at any store with a medicine aisle typically.
Do you have Critical Care? It’s a powder full of dense nutrients typically fed to rabbits in certain conditions where nutrients is needed following a medical procedure or a condition. Feeding her some may help her build strength, as well as stop any hunger she may be having.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.