She embarrassed her son in front of everyone on one of the most important days of his life. He obviously wanted to make a romantic gesture, albeit out of step with the usual customs of the family. But even if she didn't like it, it would have passed in a moment or 2 and then she could speak to him afterwards. Now she made such a fuss that it will not be forgotten.

And slapping your son on his wedding day? That will surely drive him into the arms of his wife's family and away from his. What an idiot woman!