Disorientation

It's the end of the junior year of highschool. This story follows 17 year old Athena ,who is staying at a boarding school near New Orleans, she is trying her best to fit in. Everything, is going smoothly - well until she starts getting flashbacks of events she can't remember. All of this while her closest friends start to turn on her. Are her friends actually who they say they are? How are the flashbacks she keeps getting significant? The other teens in the school, what are their stories?