The vet will recommend you keep her indoors (which you probably do anyway) as post anesthetic they can't regulate their own temperature properly so can get cold. You will also need to restrict her movement for about a week so that she can't tear open the site with excessive running/jumping. As Waffles505 said, the most important thing is to make sure that she's eating, drinking and pooping properly. Rabbits that are in pain often don't eat, so try to make sure you get some painkillers from the vet to take home with you. They usually give an injection at the clinic that's good for 24 hours, but you need to make sure she's eating again as soon as possible.
Take some hay and food in with you to the vet for them to give her after she wakes up from the surgery so that they can try to get her eating again. Bandit was a little trooper and started eating well at the vets as soon as he was able. If you're ever in doubt about how well your bunny is recovering, don't hesitate to give your vet a call and ask their opinion on her progress or even bring her back in.