As The Edge of Seventeen opens, Nadine (Hailee Steinfeld), a dramatic sixteen-year-old, bursts into her history teacher's classroom during lunch hour and launches into a mile-a-minute speech proclaiming her intentions to commit suicide. For what reason she'll kill herself we do not know, but we can gather from her demeanor (as well as the quick jokes she makes during her speech) that this is not a legitimate threat on her part. Instead, she appears to be a teenage girl in full melt-down mode, likely in reaction ...