Teen age girls out in the third world think nothing of going off with exotic strangers in search of fun and 'whatever'. After all, who would harm an American tourist out for fun?
The only thing that reins in some predators is the fact that these countries survive on tourism--and the natives learn that bad publicity is bad for the economy, so they usually put pressure on the bad guys to keep predation to theft and robbery. Even so, many will point out the guilty ones because they always know who dun' it.
The more you travel in these islands the more the facade fades and the more you see the small town mentality of the locals, most of whom are pathetic throw-backs to pirate days of old.
Sad but true and so few really spend enough time there to see it clearly for what it is.
They depend on that.