The cone thing I’m kind of iffy about honestly. My rabbit was neutered so I’m not familiar if there’s a difference with spaying, but an emergency vet recommended I put a cone on my rabbit when he seemed to be licking his stitches, and he did really poorly with it. Acted like a fish on dry land so I took it off him immediately, because there was no way he was going to eat/drink with it on.
My normal vet told me the next day that cones on rabbits should only be used in dire circumstances when it just can’t be avoided, because rabbits respond really negatively to the cone, often stop eating/drinking and get ‘depressed’.
I definitely hope you have a different experience but I wanted to let you know what mine was. Maybe someone else will have a different cone story to share or other advice.
Definitely talk to your vet about what to do if she doesn’t seem to be eating with the cone on etc. And ask him/her to explain why the cone is necessary. It might be because she’s already chewing/licking her stitches, but if she isn’t yet, the cone should only be put on her if she does from my understanding.