Marissa Meyer.
Her fanfiction website (as Alicia Blade).
Titles I've written about:
Cinder (2012):
I really liked Cinder herself, and the romance is enjoyable, but the real standouts, I felt, were the side characters: Iko, Cinder's android; Torin, Kai's advisor; and Levana, the Moon Queen who is MADE OF PURE SLINKY EVIL.