Charlie and Charm (Pony Camp Diaries)

Charlie is devastated when she grows too big for her first pony, Apple, and has to sell him. Her parents think that sending her to Sunnyside Stables for a week will help her move on, but Charlie isn't interested. Can Charm live up to his name and win her round? Written in diary form, this is the fifth book in a brilliant series that is perfect for all pony mad girls.