Jaidyn, Who Just Turned Eighteen, Is Out with Several Friends

Jaidyn, who just turned eighteen, is out with several friends. They decide to see a movie, but it is sold out. Jaidyn hides in the back of the theatre and yells "Fire" as loudly as she can. The theatre empties, allowing Jaidyn and her friends (or so they think) to watch the movie. Unfortunately, a theatre employee saw Jaidyn yelling, called the police, and she is arrested. Jaidyn tells police officers that she's merely exercising her free speech rights. She adds that the employee is lying and that she personally saw him stealing popcorn. The theatre employee tells Jaidyn that he will sue her for defamation, to which her response is that she would win based on her right to free speech. Discuss whether or not Jaidyn is right on both counts and why.