A n o t h e r POV! :D Also gore warning lol

You ave known Nova since grade school. She was your bestfriend and you could trust her with anything. one day you guys were talking in the halls and she seemed a little..off. You shrugged it off as "Not a lot of sleep." or "She's just hungry." Nova sighed a bit then smiled "Y/n? Can you excuse me?" You nod and smiled "Sure Novel!" (You call her that because she's a huge bookworm) She walked off.. Out the school? You get a little curious and follow her. As Nova went behind the school she looked around which cause you to hide. She nodded a bit the walked over to a girl that was waiting. As you watched you noticed Nova had a knife behind her back. As you watched Nova proceeded to stab the girl in the throat multiple times. You felt vomit crawl up your throat but you held it in as you watched. Nova then proceeded to slowly cut the poor now dead girl's head off (Dont judge me-) You almost vomited right there. You heard a loud crunch as you watched Nova eat the head. The crunch is what made you break. You turned around and retched on the ground vomiting on the grass. You held your stomach then turned around and came face to face with your best friend..
What do you do?
I know I suck at being gorey and gross but leave me alone dude -_- I tried lol