I don't know if you're actually not bright or arguing in bad faith. The idea of punishment doesn't exist in a vacuum, it serves a purpose based on what society, law, culture, and tradition deem necessary. Punishment can serve as a general deterrent, a tool for incapacitating the violator of the law, retribution based revenge for the injured parties, or rehabilitating the offender.
Punishment can serve as a form of achieving one, some, most, or all of these goals. You yell punishment as if it's simply retribution through vengeance as if some form of archaic proportionality based harm must be visited upon Anissa. It's not that easy or simple.
She came out of the experience remorseful, Mark came out of the experience wanting nothing like vengeance, and Anissa learned to create a family and sacrifice herself for the safety of others.