Update
Good news, bad news and confusing news....
My girl had an MRI over a week ago and the result were great! Spine looks perfect, no signs of IVDD or FCE, no tumors, no lesions and everything is inline.

Bad news is, this means we have no idea what caused her two neurological episodes. Hopefully it never happens again, but if it does, I will get her right to the neurologist.
Because of the clean MRI, the vet said she was able to return to agility and her normal routine of walks, running and playing. We were all set to return to agility this weekend, when Bailey jumped off the couch and immediately started limping. She was still limping the next morning, so I took her to the vet. The vet didn't feel anything broken and didn't feel any inflammation. She thinks she just jammed or twisted something. However, it does appear that my boo has arthritis in her elbow and shoulder.
She still limps badly when she gets up from resting, but once she is walking around for a little bit, her limps starts to go away. I am wondering if arthritis was the problem from the beginning. The only thing that confuses me is the toe-curling test that Bailey didn't react to. That's what makes it seem neurological.
I ordered cosequin. I am also going back to commercial raw food. I had transitioned my dog to kibble a few weeks before her first limping episode. So we're going to go back to raw and see if that helps.