What is the reason for my relative's insistence on slandering my honor, and her failure to learn from what happened to her?

We advise you to be patient, strive against your lower self, and repel evil with that which is better. This will transform an enemy into a close friend, and only the patient ones, those of great fortune, can achieve this. Treat people as you would like Allah to treat you. And whoever forgives and reconciles, his reward is with Allah. The oppressed person may supplicate against the oppressor to the extent of the injustice done to him, and this is just. However, it is better to strive to be among the people of virtue. The woman should be advised gently to avoid engaging in backbiting, either by yourself or by seeking help from someone who has influence over her.