
No, it is not understandable to fault a child for what adults did. EVER. She can yell at the husband's grave or at the woman who slept with her husband, fine, they did wrong. But the child is a great kid and never hurt her.
Plus, she's hurting her family. So, she's worse than the husband. The husband kept his relationship discreet, the mother is openly neglecting and abusing. So,who is worse?
I have sympathy for her widowhood, and I well understand depression, but she can dress herself pretty and go out (usually, depressed people don't do that). Seems to me it's more about resentment, bitterness now. She's just being a pisser to be a pisser.

True maybe the mother is not as innocent and not the victim she's portrayed to be. I'm not saying it's forgivable to act like a bitch the way she is, but in that situation, how would I act? How would you act?
Yes she can yell at a dead man, at a piece of stone to vent her anger. But that doesn't change the fact that the husband betrayed her, or at least how the story has progressed so far. It's not okay for an adult to fault a child for something he/she has done, but that's just not human nature. It takes a person with a truly truly kind and forgiving heart to do so, and I tell you, BARELY ANYONE is capable of doing that. All I'm saying is, her behavior is understandable from a realist's standpoint.
And yes, the child is really awesome of bearing the hate from the mother, and the love from the siblings.

It's human nature to steal, be prejudiced, and kill--as history has shown. But we don't excuse it. We have laws against it, including child abuse and neglect.
So, while I understand feeling as if your world was turned upside down and feeling anger, you direct that anger. Why bring the kid into the house just to abuse or ignore him? To do chores? It's been years now since her husband died. Sorry, but she needs to woman-up and be a mom. You get cut some slack, but not forever.
And no, one doesn't even expect her to forgive the woman or the husband. The child, yes. That doesn't take a huge heart. That takes human decency. She's not even taking care of HER OWN kids. THey're taking care of her. You know ,they lost a father--it's not like they are unscathed. So, really, she's a bitch. Some people just are.

If my husband died, I wouldn't leave the kids for dead. Also, I no longer gave her a pass when she tried to kill her baby via smoking. She didn't love the child at all, and never cared for her. Also, the boy appears older than the girl is. That's a green light to me that the mother's the one who stole him away. The mother's hate could be realistically understandable if she at least did some things for her children, but she didn't. The kids had to fend for themselves. She never really went out of her room, unless to pick up the boy, and lashed out her abuse on him as well, going so far as to say a murderer. She's attempted murder as well with Sanguo (kill via birth defects or miscarriage). She's an awful woman who didn't even get off her ass when they went into middle school. Worse people I know have snapped from a depression before their kids went into junior high or high school. And the comment either above or below me is right. She's being a pisser for being a pisser.
I feel like for the mother - she has mixed feelings. i feel like part of her does like the big bro, but can't find it in herself to forgive her husband's affair and since the husband is dead, she only has the dude to relay her anger to, which isn't right but also understandable