For ANY reason, you can take her to that vet and ask for a pain shot.

They're like us and have different pain tolerances.

Out of lets say, 10 spays, about 2 would come back for a pain shot or request pain medicine to take home with them.

Both Pee Pee and Sami required extra pain shots (one for the road) after their spays. (Sami was a total crypto)

The incision is allowed to be a bit swollen, but NOT red or hot to the touch.

If she's in pain, she can get a pain shot. If she's not in pain, but just seems like it, the pain shot wont hurt her.