People fail each other all the time, Mo, and they forgive each other, and start again. It's a question of knowing the other person's limitations. Knowing what's fair to expect of them. Knowing what's fair for them to expect of you.
Justice is about making them pay for [her] pain. Revenge is making them pay for yours.
People spot a big black lens, and they worry about what they're doing, or how their hair looks. Nobody see the person holding the camera.