I'd ask the other students what she was doing with the locals. Someone from the group must have been with her,.
Now it's possible she didn't voluntarily get in the car. Perhaps she was being abducted.
But what is a high school girl doing in a nightclub in Aruba in the first place?
In my area we had a similar incident -- a local high school cheerleader was on a class trip to Hawaii to participate in a cheerleading tournament.
She went partying, got drunk, and was last seen going off with two men.
She then plunged to her death from a hotel balcony. The two men were found sleeping off their hangovers in the room from which she fell.
Good point. . what was she doing going off with no friends into the dark with some locals. . .no judgment, bad judgment. . .whatever.