Yeah, I killed that asshole. I beat her up, then offered her mercy. She refused to stand down and let Me leave, so I killed her.
I heard you can give her mercy by repeatedly pressing the “spare” button and dodging her attacks, but at that point, she doesn’t deserve it. Child-hitting kidnapper.
A girl lights a child on fire and you call her a monster. SMH.
(Though she’s technically not actually burning a child alive. Magic targets the soul, not the body.
Which sounds way worse, but in-universe, soul damage is a complete nothing-burger - by which I mean it’s nothing after eating a single burger. Magic damage is trivial to heal and doesn’t actually cause harm unless you hit 0 HP, which Toriel actively avoids doing to the player during that fight.)