I would say that it's not accepted but when you have juveniles being the main drivers of conflicts then it devolve into this. Normally it wouldn't happen unless it's a case like Yummy and generally they would be killed or ousted for intentionally killing a neutral ( especially a kid).

For the mother and GoFundMe scenario , people just need to mind their business. As long that her child receive a proper burial, then the rest of the funds is private spending.