Popa, I would add that Loshon Hara is even worse than all of the above, as the Gemara says that at the end of times Hashem will forgive those who transgressed the 3 big Chamuros- killing/arayos/avoda zara, but Hashem will not forgive those who spoke Loshon Hara randomly -“Uma Yisron L’baal Haloshon”.
Whoever messed up these teens in the first place, will get the ultimate punishment of all.