When I was in high school this girl joined our class. She had suffered from a brain tumor and was extremely stupid. Like fr one time I spent an hour trying to explain that even though she died her hair red with a permanent color her hair would still grow out to be it's original color. We all thought she was stupid bc of her brain surgery so we kinda felt bad for her at first. Although we soon learned that this girl was a monster. She did multiple things. She threatened to push a new student down six flights of stairs, threatened to kill people, constantly disrespected ppl who tried to help, would run out of class with no explanation, and much more. The worst thing of all though was when she tried to lock one of our classmates in a room by himself and attempted to gRAPE him. He ran away before she could complete. This was the turning point for me. I knew from that day that I would get revenge on this person. The friend she attempted to grape had a developmental delay so even though he was 13 he was more like a 7 year old. This person blocked me after she graduated a year before we did. I did not find out about everything she did until after that. She was scared if I found out I would hurt her. I was never mean to her but she was always scared of me for some reason. She blocked me after graduating and tried to cut me off. So that brought me here. I need to get revenge on this person. I have her phone number, her boyfriend's Facebook and work place. Oh she's also pregnant.

So redditors tell me what should I do?