I am an extremely athletic person married to an extremely non-athletic person. I am lucky that everything I do I catch on quickly and become good at. She....well....THINKS she is the opposite. But mainly her problem is she tries something once, isn't good at it(and who is the first time) and quits.
Got her a bike when we were first married and the tires rotted. I finally threw the bike out some 20 years later and she insisted on a new bike a few years ago. It has maybe 10 miles on it.
I got my daughter a road bike a few weeks ago and we have been riding. I think my plan worked as my wife showed interest in riding, probably by sheer jealously. You know how women are(don't reply, you know how you are ).
Anyway maybe she will keep riding.
And, no I don't ride hard or fast or long when with her. I pedal, coast a long time and pedal a few more times every minute or so . So it's not that.