Female protagonists have a nasty habit of preaching "love and justice" and doing exactly the opposite — which is to say, they blast the antagonists into dust about 97% of the time. However, when a heroine that advocates love and peace finally encounters her ultimate enemy, she will almost never actually fight that villain even though she has vaporized practically every other bad guy before this. Rather, she will choose to reason with this person or being and maybe even sing to them. And somehow, it always works. This ties in more than a little bit with Rule #21