Originally Posted by
tractorlegs
For me, really the only thing to do was to keep riding and let her get used to it as time passed. Now that we both are going through ours 60s, however, she sees another aspect of my riding. I am not on medications, am strong and mobile, have low BP, no chronic disease, etc.etc. while a lot of family members are chained to doctors and drugs. In the long run, my riding produced a lot less worry for her.
My thoughts are related to Tratorlegs comment. She can worry now (also keep in mind that most people who worry to that degree aren't going to be helped, no matter what you do), or worry later when you are complaining of all the sedentary related problems that were caused by you not riding.