1) The passenger is clearly lying. A captain would not make an emergency landing because an economy passenger simply used a business class bathroom. She was clearly unruly either before entering the bathroom or after. My guess is she pushed her way past other passengers and slammed the bathroom door shut. And when she came out, she was being aggressive and non-repentant.

2) You're citing an airline called Niki? You may as well use the German Wings crash as evidence why it's no longer safe to fly.