The New Girl

First Day :
After Lit, I decided to take a little break before heading towards my next course. I decided to go to the cafeteria. I headed towards the Locker Section to keep my books. I opened my locker, there was a note. Note? After just one course on my first day? I wondered.
"Go back Grace, or I'll tell everyone about what happened on that night. I won't let you sleep peacefully Grace!"
My mouth dropped open. What?