My Shooting Star (Gravity Falls Fan fiction)

Hello there I'm Madison Pines the youngest triplet of the Pines family .
Dipper and Mabel Pines younger sister . She is very weak and able to see strange unknown things . She doesn't look like Dipper and Mabel at all . but she is very special that's why she was locked in a hidden room . she has never been outside . She created a friend name Bill . He and I were best friends since mom locked us in a hidden room . I only met my elder sister and brother when I was just 2 years old ? I nearly forget how they look like , and I'm sure they have forgotten me as well . will they ever remember me ?
One day while I write down my diary , I got it from bill he always tell me about the world outside . sometimes he would show me pictures . he told me about the universe and its power . I write it down in my diary . He told me if I wanted to leave and go to This place . he said its full of mysteries and adventures . of course I agree and he and I became partners . until that very day .....