do vets not routinely tattoo spayed females in your area? It's just a small female symbol with a slash thru it on their belly close to their legs. That way if kitty ends up getting lost and finding a new home they don't get cut open again if the vet sees the tattoo. Cat belly buttons look kinda like scars and there have been instances where a cat had surgery scars that were from a c-section and not a spay. I'd schedule the surgery and hope the vet saw a scar or tattoo on her shaved tummy before he cut her open.