
Well he was obviously wrong on physically hurt and torment another person . But i think in the moment the mother was just so overwhelmed by how her son was feeling . Obviously , as her son , she cares a lot about how he feels and i think she felt worse for making her son feel insecure about their love for him . And if you look a little more , you can tell that she's trying really hard to take care of two kids ; enough so that she even has to go to work and ask the neighbor to care over them . Still , i hope they do a sort of taking responsibility or reconciliation in the next chapter .

And the other kid did admit he was in the wrong...? So I'm confused.

when the mother starts crying and saying it's her fault. When a parent does that. From my experience that is pretty much them taking the kid's fault and adding it too theirs. from what I experience when A parent does that the child never gets punished or even lectured on their actions since the parent is reflecting on their own.

I think the mom felt at fault because by taking care of her nephew she started to neglect her own son and also blames herself for not realizing what was happening with them and teaching her son that it wasn't right to hurt his cousin
.... one family doesn't know how to family. the other does. And why did they say the kid nothing wrong? He had injured his cousin. I don't know about you but I got in trouble when I hurt others. Even if I did the whole Not fair or don't blame etc thing.