Sounds like your Mom is in mega denial over her situation. Not unlike my Mom who doesn't go to the doctors unless profusely bleeding or unconscious.

She is an adult and will do as she wants regardless of your opinion or attempted intervention. I just think it would have been nice if she had informed you of this situation earlier on in your diagnosis journey. There are familiar linkages to MS.

In the meantime, just concentrate on your own health and what works for you. Your Mom shouldn't be a positive or negative influence on your life. You too are now an adult and can choose what is best for you and your family.

I wish the best for you.