That could be and would be understandable. The could also be waiting for Greta to return. Or it is still coming up.
Wonder why Beth was so sure the Kalpoes were involved? Maybe they were, what with the cleaing of the car and those careful stories from elder Sloot. But maybe accessory after the fact is not a crime in Aruba.
I would think they would be held, even if for a lesser crime. Kidnapping or rape. If Natalee was murdered, the brothers may not have had anything to do with that. But, that's a big IF because nothing has been presented to indicate that she is dead.
Sharon Rocha would be a helpful
companion to Beth these days.