The Beginning of Brace, FanFic For Hannah Young

I made a FanFic for Hannah Young, who made a very nice Gravity Falls OC. Wish I had her skills!
Grace is a normal girl, who is like any other teenager. Bullied, in a relationship, other teenage things. The only problem, one time, after school, a demon named Bill Cipher possessed her body. Alone and confused in the spirit world, Grace seeks outside help.