We were invited to our nieces High School graduation a 2hour trip from home. Upon arriving at the auditorium we were informed our niece decided not to attend the ceremony and left with her boyfriend another missing graduate for a trip to Florida. No one bothered to call or inform us before we made the trip that they skipped out. DH is pissed at his sister as she knew 2 days prior. We found out from a young woman graduating that day and a friend of our niece that they had left the state. Anyone have a similiar experience being invited to a function only to find the individual you are supposed to see are not even there?