UPDATE: One of my best friends works with the airline. Apparently, it took Air Canada forever, but they got around to reviewing security footage of this particular woman's flight...
Guess what. She got off the plane... waited... then snuck BACK ON to the plane. Apparently Air Canada is mulling their legal options for going after her HARD.
(It does raise two questions: A) How come it took Air Canada so damn long to review the footage... and B) How lax is GTAA security to allow that to happen?)