The Gatekeeper's Trials

A complete urban fantasy trilogy. 

Hazel Lynn is the Summer Gatekeeper, gifted with faerie magic in exchange for spending her life in service to the Seelie Court. But her family curse becomes the least of her problems when the Summer King is assassinated and her family is framed for the murder.

The Gatekeeper's Trials takes place about a year after the Gatekeeper's Curse trilogy. If you want to avoid spoilers, I'd recommend reading that series first.