Women helping women. Women loving women.
I have heard many women say, they get along much better with men than they do with women. Some say they don't trust women. Many women with the N are jealous or bitter towards the OW. The Narc gives you so little that it may be easy to fall into this trap and blame the OW for what he is doing or not doing. Easy to think he must love her more or perhaps she is better than you somehow, not the case. She is just like you in many ways.
There may be a variety of reasons why some women don't like or trust OW, in general.
My father was a N/P and my Mom drank to deal with the pain of his cold insensitive cruel ways.