House of Elephants (Witchlings #3)
by Claribel A. Ortega 

2.5 out of 5 stars
Seven and Thorn are trying to find a magical cure for one of their friends who has been hexed. They begin to realize that the answers lie in the past history of all the Spares in the Twelve Towns. If they can uncover the secrets of the past, they will be able to restore the magical balance and save their friend from the hex.