All you can do is all you can do. Sorry it didn't turn out better, but you can at least know that you did your part. If those kids have some adult that they can go to if they need it they have a better chance of being okay. I don't know if you are in a position to be able to befriend them, but I hope somebody can. Having a good relationship with a supportive adult is one of the best things to minimize the risk.

<font color=purple>"The real problem of mental life is not why some people become insane, but rather why most avoid insanity." -Erich Fromm</font color=purple>