On Thursday I put her on the lunge like and surprise! Not a gimpy step to be found.
Today I didn't do anything with her because I was so hot after cleaning her stall and the paddock that I just wanted to go home and crawl into the refrigerator.
So that's where we are at! Thanks for all the helpful and supportive comments - I am glad she's fine and this wasn't another setback. I just want to RIDE already!
Oh, and we never found that acupuncture needle, so it will remain a mystery.