I had my 2 youngest Kali and Sherbet speyed yesterday and apart from being a bit needy for a better word both are fine, I had the wound glued so no need for the head collar
Is the collar on to tight this could mean she has extra pain also can she eat and drink with it sometimes they are to big which causes more distress
The other thing to do is put her in a quiet room with her food, bed and litter tray and let her sleep and only check on her try not to get her to excited and if it is still worrying phone the vet and ask if you can pop her back in for a check up