She may be doing that, if she is in Pain.
What pain meds did they send you home with?
Riley was sent home with an e-collar and Rimadyl pills, for pain.
My vet actually told me to give him the Rimadyl until they were
finished...even if he did not seem like he needed them....
but my previous dog was never sent home with a collar or
pain meds and he was a mess.