It's about a high school student named Debbie that lives with her grandma who abuses her, and her Grandma's dog 'B.B', who Debbie later kills. Debbie also ends up killing her Grandmother, classmate, and I think some social service lady :S
Debbie also is in love with her teacher, 'Alex' but he has a girlfriend who is a flight attendant. There is also a character named Meegan who is Debbie's enemy at school.
lol, it was a really twisted movie, but I'd really like to know what the title is!