One thing I would say is MS is a hard diagnosis anyway and with the spike proteins acting on nerves like they can I would tell her it might be a misdiagnosis and to wait. There aren't really any very effective treatments anyway are there? Give her some hope. Its a weird disease even if she does really have it. The one thing I personally wouldn't do is start a lot of extensive drugs unless you have really researched how much they actually help because starting new drug interactions will make it impossible to get a clear second or third diagnosis over time. Make SURE she is taking at least 10,000 IU of vitamin D a day. Vitamin D insufficiency causes all kinds of weird pribpems a most old people get no sun and are severely deficient. See here https://duckduckgo.com/?q=vitamin+d+multiple+sclerosis