How should a wife deal with her husband who frequently experiences wet dreams and avoids performing ghusl for prayer, and must she confront him about that?

If a wife knows that her husband is abandoning prayer due to a wet dream or for any other reason, she should advise him gently and wisely, and warn him about Allah, because abandoning prayer is one of the gravest sins. A wet dream is neither a fault nor an excuse for neglecting ghusl (definition) and prayer. If he cannot use cold water in the morning and cannot find anything to heat it, he should perform tayammum (definition) and pray, then perform ghusl later. Neglecting ghusl and prayer is a grave offense. She should encourage him to perform ghusl and pray. It is possible that the frequency of his wet dreams is a result of her shortcomings in fulfilling his rights.