Quote Originally Posted by Fynn View Post
That’s... not exactly her reason if you’re on the true ending path. Rather, she was more upset he didn’t actually have the guts to do it, but also wouldn’t back down on his promise to get the monsters to the surface. So it’s less that she left him because he decided to kill kids, but rather because he’s an indecisive smurf
Yeah, she tells him that he could have gone ahead himself and gotten souls and brought them back. Toriel has never shown herself to be anything but loving, so I still think she would have judged him had he chosen the souls of children, versus, say, someone who was dying and would willingly give up theirs.

Narratively, the monsters trying to escape is weird anyways, because it doesn't seem like all that long ago they were forced underground in the first place. Or maybe monsters just have really, really long life spans!