At first my fiancee was very understanding but slowly the anger filtered its way through. We got round most of our problems by reading a couple of books. One is called My husband Betty and the other My husband wears my clothes. I can't remember the authors and I can't get to the books at the moment. I can find out if you let me know.
I dont expect for one second that you could persuade your wife to read them but they explain how the wife feels in these situations. For instance their own femininity but questioned, something we have done for most of our lives but something your wife may have accepted without thought and therefore she now feels threatened. I found that understanding your partners feelings as opposed to making second guesses has really helped the pair of us. And please don't think I am suggesting you don't take your partners feeling into account as I am sure you do.
I wish you and your wife the best of luck as I am sure if she got to know you Marla, she would love what she sees!