Do you mean “lesion”?
I’d really get an ortho consult from your local referral hospital and or (I’d go with and, personally) a boarded radiologist to review the films. More info and input on these things is nearly always of benefit.
Was she sedated with ketamine? I find that’s hard on many of them. Going with another agent if there’s a next time might be much easier on her.
Hopefully the librela helps her out!