That’s great that they are eating and pooping!
The tooth grinding does indicate pain, though. You should have their space restricted a bit so they can’t jump around, which you prob already know? Metacam is equivalent of ibuprofen, so it might not be strong enough. Spaying is a major surgery, so the metacam takes the edge off, but isn’t full relief. What is the dosing frequency? If your interval is every 24 hrs and you notice more grinding when she is due for a dose, you can ask your vet about splitting the dose into two and giving every 12 hours. If you notice her deteriorating or grinding more, I would def call the vet and see if she can get a stronger pain med, and also make sure she hasn’t pulled a suture or anything.
.
.
.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.