Right. The thing is, Curaçao is a Western country, a self-governing component country of the Kingdom of the Netherlands. It is a politically stable regional financial and industrial centre with high piving standards for its population, progressing steadily over the generations towards full self-government. It is as Western as Hawaii, or Puerto Rico, or Guadeloupe.
There are some destinations in the Caribbean that might make the abduction scenario more likely. Haiti has been an occasional port of call for some cruise ships in better times—look up Labadee. But Amy was on a cruise ship heading to one of the most stable and secure destinations in the Caribbean, not even having gotten there before her disappearance. Curaçao is just not a dangerous island territory where Westerners have to fear for their lives, and Amy's American citizenship would in itself have protected her from the marginalization that actually sex trafficked women from elsewhere in the Caribbean basin face.