I'll step in here to answer that one. I found it curious that, all of a sudden Mrs. H took a pass and was a no-show, holding on to prior info and not wanting to "peer into the dark lookinglass" any further. After all her accusations about the Aruban officials being mum, she becomes mum. That's my take on it anyway.
Of course, you realize that the time she did go took even Greta completely by surprise, right? Perhaps she really DID have a previous apointment, most likely to meet the incoming flight with friends from Alabama on it.