The Last Time in my Life or so I Thought

Avnika Mehrotra is a rich,thirteen year old sociopath who goes to a haunted school. Every one in her school hates her ,except her best friend, Avneet Bhatia. One day,her evil teacher, Ms.Dracula,leaves the class for a very long time,and never returns.She also locked the door and switched the lights off leaving Avnika scared. Few hours later,the door opens and a scary and deadly surprise arises. Will she and the other classmates die or will she be the only survivor?