We are looking for balanced counsel as regards to a woman saying to her husband: I am not your wife?

Question

Our counsel is as follows: If a woman says to her husband I am not your wife, it does not have any consequences, because according to Shariah, the wife does not have the ability to divorce her husband by Talaaq. Further, the wife should avoid using such words, because the husband may get angry and say the same to her or he may confirm her words and say yes you are not my wife, or words of that effect. Marital problems should be dealt with in an atmosphere of love and understanding.