She's going to eliminate all demonic life permanently and all heroes, leaving the world safer but at a lower overall power level. Then she'll get depressed and pray to get sent to another world. Repeat.Wonder if she'll end up a villain / wanted criminal at some point, must she really kill people in this new world with different common sense(which she already confirmed on page 17).
inb4 the story will go to the direction of "ohh noo the heroes are badd, so it's okay for her to kill them"
i'd roll my eyes for a bit if that actually happened.