Started working in the horse industry at age 14. She worked for many barns, starting out with the more menial and labour tasks and progressing through grooming and preparing horses for shows, including saddle seat and hunter competitions (which is one of the jumping disciplines). She went along the show circuit with the trainer and horses. 

Rosie went to college to take western horsemanship, and has been teaching horsemanship since she was 20. When she and I met 6 years ago, I introduced her to equitation science. She was already familiar with most of the principles, having raised an autistic son, and quickly and easily applied equitation science to her teaching and training, with excellent results. That also started her focus change to more English disciplines, including dressage and jumping, as the same principles apply to every discipline.