Paranoid

Cesily isn't actually that crazy. She's just socially awkward. Yes, she is a little weird, but it isn't her fault. She's been isolated from children her age since she was seven. When that happened, she stopped talking. She started to go just slightly insane from all the loneliness. She wasn't like this before. This only started when she hit the age of sixteen. She also stopped eating three meals a day.
Cesily's mother decided that it was time to put her back in the private school system. Cesily will have to sit in a classroom of real people. She hasn't done this in nine years. She is going to have to talk.
She made a friend for once. What if she loses her friend? Cesily is trying to become normal again.

She's paranoid.