Catherine Carey wrote five titles for the Crown Pony Library. She didn’t write books in the top rank. The five books I know about were all written in the first person: her equine knowledge is accurate (see Pink Pony, which describes the training of a mare from the age of one) but her plotting sometimes lets her down. Because of a Pony is perhaps the worst offender. Jessamy and her friend Linnet are longing for adventure, but don’t spot it until it is on top of them. The pony element in the book is very slight; and not enough is made of the characters’ relationships to each other to make the eventual outcome with Jessamy’s sinister cousin at all believable. Possible plot developments, like the hopelessly inept District Commissioner of the local Pony Club, are ignored, leaving you wondering why they were put into the book in the first place.
Show Jumping Summer is rather better: it was the book I enjoyed most. Melrose lives with her quite extraordinarily pushy father and aunt, who are convinced that she is gong to become a show jumping star. Melrose does not like the relentless lifestyle, but over the course of the book does manage to stand up to her bullying family, and start to do things on her terms.
Grey Arrow is notable for being one of those pony books (there are alas more) to have, shall we say, a stern hero, Philip. The heroine, Melanie is pretty nearly as bad as him: an epic grudge holder, she puts a thistle under the saddle of Philip’s horse. She does, however, develop over the course of the book, and the romance which starts off between the pair is not completely unbelievable.
Finding the books
If you decide you want to read her, the books are usually easy to find. The Nameless Pony can be tricky, but even when it does turn up, is not generally expensive.