All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
If what you mentioned about your wife is true, then the methodology that she is following is very serious because it is not permissible for a Muslim male or female to consider himself/herself as a judge saying that so and so is an innovator, or that so and so is a dissolute person, especially if that person is among those who make efforts to serve Islam. On the contrary, it is an obligation to respect these people and honor them and thank them for their efforts in Da’wah (calling people to Allaah) and for being sincere and dedicated to their nation. Even if they commit a mistake when making Ijtihaad (over matters on which no verse or Hadeeth apply), they will be rewarded for doing so as they are humans and they are not infallible. Rather, their mistake should be dealt with according to the Islamic etiquette without exaggeration or negligence. Indeed, a person who adopts the methodology of those people [whom your wife is following], even the prominent scholars of this nation would not be safe from them [their criticisms]; as Allaah only made the Prophets to be infallible.
Therefore, we advise you to be patient with your wife and to be wise in dealing with her. Indeed, you may mention to her some statements of some contemporary Salafi scholars who are well known for their knowledge, piety and justice (like Shaykh Ibn Baaz and Shaykh Ibn ‘Utheymeen about Sayyid Qutb and other scholars who are severely criticized by those people whom your wife follows.
Moreover, the people whom she follows have also been warned (by the scholars) against the wrong methodology that they adopt. For more benefit, please refer to Fatwa 87643.
Finally, it is not permissible for your wife to raise her voice over you or to insist on discussing such matters with you. Rather, this is considered as disobedience on her part. For more benefit on the steps to follow in dealing with a disobedient wife, please refer to Fatwa 85402.
Allaah Knows best.