Again, that little shit wasa, in this scenario, she still asked for food. And Reimu, maybe she was a good mother, but raising that many children when she, the yukkuri notorious for being useless and entirely dependent on her husband, was alone and without help from her spouse? Yeah, maybe it was unfair to her, but sooner or later, they will be dead anyway. There is no way a yukkuri infamous for having a bad "hunting" (forage) skill can raise a big family with seven members. If I was her, the first thing I would do is kick some ko out of my family (wasa included; in fact, she will be the first one I would kick out). That way, there isn't any guarantee that they will survive, but the death rate will be much lower than before. And she will have more time to teach her kid; I don't know, listen to what she said in the first place? Because all of this happened due to her being unable to teach those little scums to follow her command.
Edit: Also, the koMarisa didn't have a parent figure to follow, so there is no way that they can become a hunter in the future, even just a normal one. They can't hunt, they can't be dependent, they can't help their family. At least if somehow they survived, Reimu can teach her koReimu to "pffffff" singing, dancing, taking it easy, finding a sla - I mean a husband. There may be a koMarisa that can become a great hunter with no help from others, but absolutely not those ones.
Updated
Mother Reimu can only stare at her Little Ones becoming weaker and still without being able to do anything about it. Hence she keeps waiting and waiting for Mister Human.
Even after the Little Ones stopped moving, stopped talking and turned black, Mister Human never came backYu...Yu...YuYu...Yu..YuYu..Even Mister Human would feel uneasy if he was forced to stay in the same position for a long period of timeYu..YuHey, Reimyu is hungryAh, seems like this Little One's paste circulation has stopped working normallyFor example, the Economy Class SyndromeLets explain!Please answer mommy!Little One, what's the matter!? Take it easy!Because she stayed for a long time in this position, this Little One has also suffered damage to her paste circulationFinally