We're told she was a scholarly and community minded person while we see her on psychotic rage trying to murder a woman on video. The two can only both be true if: (1) she was nuts (2) she was drugged out of her mind OR ... they aren't both true. It obvious that the murderous rage part was true. My doubts are focused on the sweet community minded honor student part.
She was “supposedly” picked on, harassed, and bullied to the point where she grabbed a knife and went after her harasser.
Something that is at least plausible.
No good actors in this story.