I had similar effects but probably not as severe as your step-mother. Ultimately my body acclimated (don't remember how long but maybe 3 months or so). I would jump if the phone rang! Just remember that your Mom needs to be checked regularly for visual, hearing side effects. Not a bad idea to make sure that her thyroid is not out of whack and causing some of the nervousness. Also, not a bad idea to see a therapist so that your Mom would be able to confront and change some of the unreasonable beliefs that she has about this condition. She is indeed fortunate to have such a caring daughter-in-law. Wishing her the best.