My 15 yo DD plays in a Basketball team and her team mates are really great girls. There's 4 of them, a couple of whom are just turned 16, that are close, DD included. I've just learned that they've organised to go on a 4 day trip to Amsterdam. They've asked DD to go. I've learned this via a friend, via FB. DD hasn't said anything to me yet. Now normally I'm pretty decisive. But I just feel really unsure. I trust DD and these girls, but abroad? WWYD???