I hate this for Uni and for you. My thing though, is ALWAYS get a second or even 3rd opinion from a trusted dr. I wouldn't anymore put Curly through unnecessary procedures than I would my kids. Surgical types are always gung ho to get you in there so I always consult with a few non surgical and homeopathic docs. And believe me, I've had a lot of surgeries but not nearly as many as were recommended!
If you don't think it's urgent, and it sounds like it's not since she's not usually in pain, maybe take some time to watch her and think things through without being in a panic. Let her behave normally, running and jumping because that's who she is. But keep an eye out for symptoms of ls and go from there.
Ultimately, you're the momma so go with your gut.