[mcphage]

Another layer for this—Kiki's Delivery Service was originally a book series. As far as I am aware, only the first was ever translated into English, and it was translated twice. The second time somewhat recently, and should still be easy to find. There are quite a lot of differences between the two, and you can really see how Miyazaki focused the plot of the movie on what he considered the most important aspect. But in the books, Kiki never loses her ability to converse with Jiji (at least not by the end of the first book; I don't know what happens in later books).

Anyway: if you like the movie, I would recommend tracking down the book. Some of the movie's scenes are lifted directly, but (as always) there's scenes I would have loved to see show up in the movie that didn't.