Rosie is an installment in the Tilly's Pony Tails series, written by the famous equestrian Pippa Funnell. The series centers on Tilly Redbrow, a young girl with an innate talent for horsemanship who moves to a new stable, Silver Shoe Farm. This book focuses on a specific pony named Rosie, who likely has a behavioral or training problem that Tilly must patiently and skillfully resolve. The narrative is realistic, offering insight into horsemanship, training, and the strong emotional connection between a rider and her horse.