Calm down, J.K. Rowling

J.K. Rowling is trying to stop the publication of a Harry Potter encyclopedia, arguing that it violates her intellectual property rights. The author of the book is Steve Vander Ark, the man behind the awesome site, the Harry Potter Lexicon. I think it's a shame that Rowling is suing one of her biggest fans. She calls the book "nothing more than a rearrangement" of her own writing, but I don't see how that could be true. Vander Ark's book is an encyclopedia, and an encyclopedia is by necessity very different than a novel. Instead of being told as a story, an encyclopedia presents things in a more factual, organized manner with sections on individual people, objects, and events. Vander Ark's book seems like it would use Rowling's material in a highly transformative manner, to create something entirely different from Rowling's series of books. Additionally, there's no way Vander Ark's book would harm the market value of the Harry Potter series, since the encyclopedia is presumably geared to fans who have already read the books, not as a replacement for them. I think Vander Ark's encyclopedia is within the guidelines of fair use, and it would be a shame if it was not allowed to be published.