That was bloody cruel of you. Yes, those teens did something incredibly stupid, and yes they are now suffering for it, but the friend who came to your house and asked for a donation didn't do anything wrong and was just trying to help the friends she has left. If you don't want to donate, that's perfectly fine, it's your money, your choice etc. But you didn't have to be so nasty to the girl whose friend just DIED. So yes, I guess that does make you a jerk.