Asylum

Alysis Dover is fifteen years old, and she knew she was Bipolar. She was instituted in a mental asylum, and was always told she was the "most sane" there. She knew her mood swings were part of her depression. They didn't show what she was really feeling. She had even seen her papers. She was only Bipolar.
She had never doubted that.
Until one day, a new guard shows up. He was younger, understanding, sympathetic. Easy to trick.
A couple visits, too. They ask her to show them around. They inspect the place. Too much.
Alysis knows she's being watched. She knows the institute is being watched. She's positive. Her therapist says she's being silly. She's diagnosed with Schizophrenia.
But she has evidence. And evidence is evidence... Right?