Basically, had she introduced herself to the fae demigod when her teleporting tower & garden entered the territory, she wouldn't have gotten in trouble. (Or little, the normal punishment for stealing vegetables isn't murder.)
Likewise, if we haven't killed her minions, her punishment would have been execution.
But yeah, easy resolution all things considered. An actual fight with her might have been dangerous if I didn't kill her before she had the chance to retaliate.