Hello Darren and Welcome to NeuroTalk! It's so wonderful hearing from a son who is so concerned and involved in his Mum's condition and care. Of course I'm sorry she has MS, it's a miserable disease. I am now secondary progressive and use a powerchair all the time, like kicker, but remember how terrifying it was to be falling all the time. My neurologist said my balance center was damaged by the MS so if this is the case with your Mum, I don't think a chiropractor would be of help. I'm NOT a physician, just passing on personal information.
I've been on LDN for a few years and although there hasn't been a major improvement in walking, etc., my doctor is convinced it has kept the MS at bay and slowed down progression. Even though you don't see improvement, perhaps it's still helping. If I don't take it for a few days, there's a definite worsening of bladder problems and over-all weakness. It's worth taking a daily pill just for those reasons until something better comes along!!
Please ask away, there are many friendly, helpful people here! Perhaps your Mom would like to join us when she gets home again?!
Wishing you and your family all the best.