I think that she's been murdered-- Aruba isn't a big place, and if she was alive, they more than likely would've found her by now. As cliche as it sounds, every day that passes, the less likely it is that she'll be found alive, if at all.
As for the suspects, I think they know what really happened. If they didn't do it, they know the person that did. Seems like the Aruban government has been handling things with kid gloves because one of the suspects is the son of a prominent citizen.
The sad part of the whole situation is that people everywhere disappear or are murdered every day, and nobody seems to give a shit...
