A short but satisfying prequel to Valente's Fairyland series of novels, this story offers intriguing glimpses into the history of the Fairyland that September, the protagonist of the novels, visits later. As usual with this author's work, the details of the setting and characters are creative and original (I was quite fond of the Carriageless Horse, Mabry Muscat, and Mallow herself), and fans of the novels will doubtless enjoy learning more about the characters who show up in the main storyline. This story has spoilers for the first novel, so it's best read after that one, but can be read before the second or third. I would love to see more of these short stories; part of what makes Valente's Fairlyand so rich and interesting is the sense of history, of other characters' stories that intertwine with the main plot, so it is a lot of fun to get more details on that. While I'm not sure how well "The Girl Who Ruled Fairyland" would stand on its own, it's a great prequel to the novels.