Or just possibly she requires psychiatric treatment. We shall have to wait and see.
The first sensible comment on this thread!
Allow airline terminal security goons to bully passengers who have to queue for ages (as at that dump known as Stansted), then cram them in to 30in pitch seats and if they suffer from a fear of flying or claustrophobia, some might well 'flip' and behave irrationally, particularly if they've had even half a wine gum after reaching the departure gate area.
Economy airline travel is a pretty stressful experience these days - although the behaviour of some passengers, such as the Vicky Pollard clones I saw waddling off to some flight from BHX to Oybeefa for a hen party the other week, is pretty disgusting.