First, I would feel her ears. If they are cold, she is probably in pain and possibly going into shock. In that case, she should be seen by a vet ASAP. If you absolutely cannot get her to the vet and her ears are cold, I would warm her up by putting her in your lap wrapped in a blanket or big towel. A heating pad on low on your lap covered by a towel, with bunny on top, works well. If her ears are OK, I would check her over carefully to be sure she’s not bleeding from her incision. That would be obvious, no need to flip her over and inspect her since she’s sore already. Did the vet give you any pain meds like Metacam? I think some vets underestimate the need for pain relief in rabbits. If it were my rabbit and he was obviously in pain, I would give him a dose of Metacam even if the vet said they got pain meds that should last 24 hours. But that is not something I can advise anyone else to do.
I really hope that your bunny is better soon! I would definitely take her to emergency care if you can’t get her to stop shaking and chattering with warming and/or a dose of pain meds. Anytime a bunny is in distress and can’t be helped by home care is a vet situation, but especially after recent surgery. Good luck and keep us posted! There will probably be more experienced bunny people chiming in to help too!