This movie came out before the movie Smiley. It as been a few years since I saw it. It was in color and English. It was either a thriller or horror movie.

I centered around a girl, who I think was being treated for mental health issues. I also think her mother died as her dad dropped off at a house to live with another girl for college. She was tormented by individual in masks (a type of smiley mask). In the end she gets killed/kills herself at her house (the people in masks were there) and you immediately find her roommate was among the individuals targeting her.