I don't think Faputa has gotten over her sole reason for existing quite yet, she was just exposed to other sides of the situation. She only complained about the kill stealing and she ate the Narehate she snatched back from the beast on last few pages. Even if she doesn't kill there is no hope for the narehate. They can't fight off the monsters forever, the dome is gone. They would need some way to fix Iru and even if there was a a way to do that, there is no way Faputa would let her mom go back to being a village.