Anyone have a book title idea?

The summary of my book is:
-Sticky notes are found in her locker from an unknown person threatening her with secrets from her past. Secrets she hasn't told anyone. Not knowing who the
person is she doesn't want to tell anyone about it because it could be
the person she is talking too (paranoia). As she gets closer to the
truth the sticky note person starts threatening to tell her parents the
things she wouldn't ever tell anyone.

Maybe title it "Sticky Note"?
Or maybe "Paranoia".