Let us be honest, we don’t pay too much attention to the speech the flight attendants give us at the beginning of each flight.
During one flight she saw a dirty teenage girl get on board with a well-dressed man. Alarm bells went off in her head. Shelia managed to get the girl away from the man and found out that the girl was in serious trouble. Shelia told the captain, and got the police officers to wait for the man as soon as the plane landed.
Take a look at this video