Who is he

Kayla was orphaned at the age of 6 when a head on collision took her parents but left her unscathed, with no place to go she ends up in a transition house waiting to age out.
She's finally a senior with outstanding grades and record breaking performance in softball, when things begin to change suddenly she is feeling, seeing, & remembering things she hadn't before. Why is this just beginning to happen when Nick and Hector come into the picture is this their doing or Is it something inside of her coming to the surface?