Thanks for the update and
Welcome to the MS family.
CIS would be out of the question based on the continual symptoms you cycled through. As more than 2 lesions were noted, this was sufficient to meet the diagnostic guidelines of the Revised McDonald Criteria. I do not think you need to see an MS Specialist unless you want a second opinion or wish to have one follow your case from here forward.
The o bands being high are probably what pushed her off the fence, but please remember that an LP is not a specific test for MS. 85% of people diagnosed with MS who have had an LP have positive results on their LP like you did.
I would meet with the specialist per your existing appointment and go bearing questions which you have. After reviewing your MRI images and your LP and any other tests you might have had, I think it will still day "MS". I think you can consider yourself out of limbo land and you can start your journey with MS. Please do not fall into a pity party trap and come here as often as you need. You are not alone.