All of the tests except the MRI were normal? But the MRI wasn't, and that should be a red flag, it seems to me. Neurologists seem to take MRI abnormalities seriously.

I hope that the medical providers you're dealing with have a system where your daughter can be on a waiting list to be notified in case of a cancellation that would enable her to be seen before February.

It's possible she has been overdoing in some way, maybe at the gym, but the symptoms must be uncomfortable, and I'm sure both you and she want answers sooner rather than later.