My first question is what is her definition of productive?
I am a trail rider and horse camper. My horses are broke, broke, broke from hours on the trail. We start in the ring with basics, and once we are out on the trail I rarely take a horse back to the ring. My husband and I actually spent hours today cleaning up my ring as I have two youngsters to get started, and I haven’t used the ring since we moved here 15 months ago.
Her definition of productive might be very different than yours or mine. Mine includes everyone, riders and horses, coming back from a ride all safe and sane. It includes working on issues like standing still for certain periods of time, standing quietly tied or hobbled, negotiating obstacles like logs, water crossings, hills, etc., as well as learning to neck rein, move off my legs and seat, and much, much more.
My second question would be are you sure she is not experiencing fear when outside the arena. Things change as we age. Fears can creep in and take over, even if they are not always rational. Sometimes it is easier to deal with the devil that you know, inside an arena, than the one you don’t know, out in the big wide world.
I made the move to trail riding only after going through a divorce. I was out on a ride one day with a friend I had shown with in the past. She was on her brand new, shiny, high dollar Warmblood, that she was going to set the world on fire with, showing dressage. I was on my using horse from my days of showing cutters. We had to cut our ride short because her horse absolutely refused to cross a very large puddle across the trail, even with my horse crossing it multiple times while trying to get her horse to cross.
On the way back to the trailer she told me she could not understand how I could quit showing, how could I ever accomplish anything being “just a trail rider”. That was when I realized we were very different people with very different goals.