Curses! Foiled Again — Jane Yolen

Aliera Carstairs is back. This time she's got her cousin -- and best friend -- Caroline in tow, and the stakes are higher than ever. The realm of Seelie, the fairy kingdom of which Aliera is the hereditary defender, is under attack, and only Aliera and Caroline can set things right. Caroline, fragile and wheelchair-bound, may seem like more of a liability than an asset, but Aliera knows there's more to her quiet cousin than meets the eye. Curses! Foiled Again is Jane Yolen at her best, reunited with her partner in crime, the fabulously talented illustrator Mike Cavallaro.