What is the jurisprudential ruling concerning a nephew who married off his aunt and then disavowed responsibility for resolving the marital problems between her and her husband?

The guardian is not responsible for disputes between spouses, and it is not obligatory for the man to intervene to reconcile his aunt and her husband. However, he must maintain kinship ties with her. It is recommended for him to reconcile between them, listen to her grievances, and offer them advice.