Is a mother considered sinful if she does not adhere to the verse, "Repel [evil] with that which is better," in response to her son's verbal abuse towards her, and is that considered a triumph of the self?

If what was mentioned about the child is true, then he has combined two great abominations: abandoning prayer and disobeying his mother. It is necessary to continue advising him and calling him to repentance and to seek forgiveness from his mother. If he does not desist, then it is permissible to ostracize him. The act of pardoning the wrongdoer is recommended, not obligatory, and forgiveness is best unless it conflicts with a predominant interest.