The problem was.. not that she was physically locked in the plane, and unable to open a door... but that she was detained, on the plane, by over-zealous security staff, who gave her a hard time, and treated her like a plane hijacker.
I think I'd be talking to my lawyers, too, if some security goons in uniforms, with attitudes straight out of Nazi Germany, treated me like a criminal, when I was guilty only of falling asleep on a plane.