Purging Evil — Charles G. Dyer

Kerry finds out that the accident turned her into an orphan was actually murder. And she knows who did it, an elf named Foley. He is a trained hunter and a felon who is wanted in several countries.
To make matters worse, Foley's son is at school with her and he is stalking her. The Seelie and Unseelie queens consider the Foleys to be renegades. Will either of them send support in time, or is Kerry on her own?
Her guardians and her mentor train her to defend herself in both worlds. She is still trying to figure out how to use her magic and accepting that she is not the human girl
that she thought she was for most of her life. Will martial arts and magic be enough to defeat the renegade elves?