Unfortunatly she is probably dead.
Paradise can suck.
If she is not found by now, forget it, look for Her remains and hope the People Of Interest will say something meaningful to even find Her.
Now, My question is Why in the Hell would Her Parents allow an 18 yea old girl to out of the country with all of the crap that goes on?
If she was so sweet, why did she leave with someone she didnt know?