Per our neuro at the U, we had Abbey's lumbar xray on Friday, and she also got a full dental done as well. Her teeth look fabulous, white as a puppy!
The good news is that we're now only dealing with one issue as her lumbar xray came back totally normal. We also had her knees xrayed as she's been biting at her legs. They came back totally normal as well. So, as we suspected, we now know that we have to move forward with the MRI as her symptoms are still happening and our vet has no explanation for them other than possibly SM. We're still researching our options for the MRI, but intend to have it scheduled sooner than later so we can understand what we're dealing with.