Glad you got some answers from you Neuro Snoops.

Been there done that with the same issues!
Of course, it took a round of steroids to get the pain and numbness to go away, cuz it was a stupid exacerbation! Along with the fatigue issues. Duh! And some urinary problems. This was at the very beginning of my MS journey. I have
a spinal lesion too. Just one....but it occasionally kicks me in the bee-hind and man do I have a one heck of an exacerbation when it does. That's when I really YELL for the steroids. I cannot take it...but I have other symptoms too and I cannot afford to stay in bed for 3 or 4 weeks for them to subside.
So...it's the 'roids and they do the trick.
I hope your sister's appt goes well today.