Honestly, I think maybe you found her calling or at least something that could pacify her in between arena work.
If I had cattle like you guys do, and your folks don't mind, I would be doing as much outside work as possible. Maybe riding outside and tracking and moving cows around(at a walk) or doctoring calves outside. Maybe give her a break from the dry work for a while then come back to it or maybe incorporate more outside work in your weekly routine???
I DON'T LEAD 'EM AND FEED 'EM, I RIDE 'EM AND SLIDE 'EM.