A sobbing man recounted his story to me: "After over 20 years of marriage, I was truly surprised to discover that my wife was having an affair for years. Several times, I caught her communicating with the other man after promising to change. She lied, deceived, and falsified papers. To discredit me, she would also tell our son and daughter terrible lies to cover up her affair, greed, and fraud. Several days ago, she abandoned our house with all our money to live with the other man."
From this story, the wife has indeed gone to great lengths to create an adulterous and double life. This may had been her true character even prior to their marriage. The spiritual and psychological/emotional sins that cause a wife to behave this way couldn't have been corrected by more flowers, kind words, or income from the husband. She needs professional help, spiritual rehabilitation, and psychotherapy.
Psychiatrists and psychologists invariably call this a type of "character disorder." Next to psychoses, "character disorders" are one of the most difficult to deal with in psychotherapy. In divorce court proceedings, the adultery and deception reflected in the character of the wife can be used to provide evidences to prove "psychological incapacity" in marriage.
Is there therapy and hope for the unfaithful wife? Yes - spiritually, mentally, emotionally. Besides psychotherapy, her therapy lies in her recognizing and repenting of her offenses and disrespect of marriage and family. If she won't, she'll continue to deceive and damage herself, her family, as well as others.