JJ came to terms with her past.
No one could forget the terror that JJ faced in Episode “200.” (Reminder: She was abducted and tortured a year ago.) After the case, Spencer Reid brought JJ the file on the man that double-crossed her, kidnapped her, and almost killed her. While reading the documents, a hallucination of the now-dead insurgent told her that he would always be with her and eventually ruin her life.
JJ slammed the file shut, silencing the voice, and was finally ready to put everything behind her with the help of her family.
Season 10, Episode 11 "The Forever People"