This was awful. The acting actually made me angry. The psycho was so monotone it was unreal. Her voice never changed levels even when she was at her craziest. Also, we have a single dad, who is a teacher at that, affording a really nice expensive home but drives an old truck. Why is it, everyone in movies live in these model homes unless they're representing dirt poor? I don't know about you but I never had a teacher who looked like that either. One of my favorite parts was when the mom acted like her daughter was being rude for being on her cellphone, at the dinner table, while she's on a date with her teacher. Oh they had the date at home with the psycho daughter because she so gracefully spilled water on his shirt and he didnt have another one... it's water... I mean ... water. It's so bad. Then you have his daughter near death, with a stab to the gut, dragging herself through the halls but then magically gets up and fights. I also saw a flip phone, who uses a flip phone, especially a teenager today?