The gun was always in her handbag, this had nothing to do with the scanners, she was not carrying it
The station reports that she told police she forgot the gun was in her bag.
She walked through (according to news reports) and picked up her bag before they noticed the gun on the screen
The Little Elm resident reportedly grabbed her purse off a conveyor belt at a Terminal D security checkpoint before TSA agents spotted the handgun.
Reports also say they found out which plane she was on
About 8 a.m., officers learned that the woman had made it on board an American Airlines flight headed to Houston (Flight 2385), and it was ordered back to its gate.
It sounds like they were trying to follow her through the airport on the video to see which flight
The station reports that surveillance video was used to locate and identify the woman and determine what flight she was on. TSA sources told NBC 5 that police boarded several flights while officers "frantically" searched for her.