Its so great. The way kina-chan "scolding" the mother were beautiful. And I mean it.
In other manga (manhua especially) most of mc would like to judge and scold like she is a monster. While it bring "satisfaction" it doesn't help IRL. Rather than being a judge, kina put herself in the mother's shoes, while tell what mother did wrong (neglect), Kina also offers help. It give a chance for the mothers reflect & becoming better in the future.