As others have said, pain meds are important. If you didn't get those, call back and ask for something. If they don't give you that, we can help you find a dose for ibuprofen--you can buy the liquid baby solution.
She may also have gas. Is she pooping, what about eating? A bottle of infant simethicone can help if she has gas. It can be very painful for bunnies, and often occurs due to any kind of stress. Our only bun to be fixed in our care (all others were fixed before we got them) got gas after his neuter and we had to give him simethicone.