Hey there,
How many hours has it been since she was spayed? It’s VERY common for this — however, typically if it lasts over 24 hours with NO eating or drinking then you should contact your vet. However, she did seem to eat her banana and raisins so I think she is probably slowly coming around. Does she have a favorite veggie that you could entice her with? Something fragrant like cilantro or basil? Even try hand-feeding her a pellet or two. This is really normal so I think you may be doing the typical bunny overworry!
But you should continue to try and get her to eat. Water down her favorite veggies before giving them to her so she’s getting a little water in her system if she’s not drinking normally. Also, do you have all her food in easy access? Somewhere where she doesn’t have to stand to reach them? If they are elevated at all, she may just be too sore to reach them. Which you don’t want her doing anyways.