@katiesblue,
I've been to 2 neurologists, an ear specialist, twice in emergency room. I had some odd symptoms that included my ear, pains in head, and was told first that it was neuritis or shingles, then migraines. This lasted two years but in the past 2 months it has simply lifted, gone. Who knows? Nobody, it seems. But I was taking Gabapenten at some point, along with medication for high blood pressure and high cholesterol. On my own, I weaned myself off all those. Now, it's diet and exercise, which has always worked for me. It works now. And, I did go to a chiropractor but don't know how that helped the whole schamoley.
I think a very simple diet with no salt, meat, milk products nor any frozen or prepared dishes does wonders. Try it for couple weeks, see if she feels better. Just common sense.
Hope your mother is feeling better.