Haunted - Sunwalker Saga: Soulshifter Trilogy, #2

Think your gap year between high school and college is tough? Try doing it as a ten-thousand-year-old djinni trapped in the body of an eighteen-year-old girl. Once, Zipporah was a free spirited immortal gifted with unimaginable magical powers. Now she's locked in the body of once-mousy Abbie Roberts and forced to deal with all of Abbie's human baggage - a summer job, an overprotective aunt, and a guy: gorgeous street-smart Mick Egan.
Okay, so Zip's new mortal life isn't all bad. She still has more than a glimmer of djinn power and a knack for stumbling into supernatural trouble even on this earthly plane. Working at a mortuary seems safe enough - when you've run afoul of djinn kings and psycho sidhe princes, dead bodies are no big deal. But when mysterious events point to a disembodied evil within the mortuary, Zip searches for answers by delving into her own past.and Mick's darkest secrets.
Haunted (Soulshifter Book 2 - A Sunwalker Saga Spin-off novella)