Moving to Gravity Falls

(Y/n) was moving to Gravity Falls to live with her cousin Gideon. Everyone hated her because she was Gideon cousin even Mabel and Dipper hated her. One day (Y/n) was walking lone in the woods. When she tipped over something and falls. When she gets up she sees that she tipped over a book she picks it up and reads one of the pages and she read the one that had a triangle man named bill.