>>9531691Slapping only makes sense when it's at the face, but that breaks the rule of not leaving visible marks that might ashame her later in front of her peers, but you do have a point. That is why the most recommended form of physical discipline is a form of slapping: spanking.
The drawbacks of spanking is that she may find it sexually arousing and her body might see it as a form of reward thus not fulfilling its role as a disciplining act.
As you can see, there is much nuance in the art of beating women!