Ironspark
(Book)

Nine years ago a bunch of evil Tinkerbells abducted her mother, cursed her father, and forced her family into hiding. Bryn has devoted herself to learning everything she can about killing the Fae-- and it is time to put those lessons to use. Then the Court Fae show up, and Bryn realizes she can't handle this on her own. Three friends offer to help: Gwen, a kindhearted water witch; Dom, a new foster kid pulled into her world; and Jasika, a schoolmate with her own grudge against the Fae. What little Bryn has gained is put to the test when she uncovers a book of Fae magic that belonged to her mother. Now she must choose between faith in her friends and power from a magic that could threaten her very humanity. -- adapted from jacket.