Really?  Your wife would have "simply left the plane"?  What an extraordinary wife you must have.  The plane was away from the gate:  no jetway, no stairs.  Reading for comprehension is a real challenge for most people these days.  Even your uninformed comment about "and caught another flight" shows you how truly ignorant you are.  Most flights are overbooked and even if a seat is available the airline is going to charge you big bucks to switch your reservations.  Stick with Greyhound.