I don't know how up-to-date this information is...
the US does not have an embassy in Aruba; the Consul General to Netherlands Antilles is accredited to Aruba
chief of mission: Consul General Robert E. SORENSON
consulate(s) general: J. B. Gorsiraweg #1, Willemstad AN, Curacao
mailing address: P. O. Box 158, Willemstad, Curacao
telephone: [599] (9) 4613066
FAX: [599] (9) 4616489
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http://www.caribbeannetnews.com/na/na.htm
I'm sure Natalee's family has been in touch with them; I'd hope so anyway. Although diplomats are useless, imo.
They need a PI but even then, the system there is so corrupt, I'm not sure anything will help.
Julia Renfro is an idiot, IMO.