See Maria while your right about yes maybe you could have tried to lead them into a better direktion lets be honest nah fuck them honestly althou ironic enough considering how nice a kid your son were he would probaly liked that outcome more. Well maybe everyone but Okaya fuck that guy actually
More importantly, none of those guys were even Maria's own children. It's up to the parents to make sure their own children are raised and taught to behave as a model citizen. Having those bullies turn out the way they are/were was definitely partially due to the parents' neglect of their upbringing, if not all of it. Those who were struggling at one point in their lifetime and finding a respected role model who helped them develop as a person
far more than their parents could like Yuda has with Maria (except with a
far more healthy and sane background) are
very few and far between to the point of being miracles.
And sure, maybe there are good adults out there who
are determined to help struggling kids find the right path to a morally good and successful future, even if it involves a little discipline that they weren't given enough of while growing up, if at all. If that's what they want to do in their life, more power to them, but in these times, there are walls that just cannot be overcome for those adults to help those troubled children (like they're already living with their neglectful/abusive biological parents under their legal custody), no matter how much they want to. They'd have to break a law or two to achieve those ends, but that would go against the very morals they're trying to enforce on them.
It's a tad unfortunate, but even if Maria
did want to turn those bullies' lives around for the better, not only was there
nothing she could do to make it happen, but they likely
wouldn't accept her 'help', anyway, because their current lives were just too good to give up to redeem themselves and be morally good.