Foiled Series by Jane Yolen, Mike Cavallaro

Aliera Carstairs just doesn't fit in. She's invisible at high school.She's too visible at the fencing gym.Aliera's starting to wonder...where does she belong?

Defender of the Seelie Courts, Aliera Carstairs, is back! This time her cousin and best friend, Caroline joins her in both the human and the faerie realms--where the stakes are higher than ever. And then there's the Unseelie-defector-troll Avery tagging along, Baba Yaga herself, and much, much more that is rarely what it seems.