Miserable Marnie & The Shut In (2013)

Miserable Marnie Strauss (17), a lonely teenage girl, lives alone with her reclusive mother, Matilda in a small town. She dreams of nothing more than to befriend the popular girl, Spencer, but the feeling is not mutual. After a cruel prank breaks her spirit, Marnie embarks on a violent rampage, exacting revenge on all who have wronged her with the help of her new friend, Crystal.