Two Greens....are you actually aware of the events and subsequent chaos that Glasgow airport is currently experiencing following last weeks terrorist attacks from all the way down there in Canberra????
Is it at all possible that perhaps your sister was not paying attention to the ground staff as they were calling out the names of the flights ready for checkin? I would say that this was more the case!
Logan Air are a very professional and "considerate" airline, one of the few remaining and an asset to whats left of the old BA!