Mrs. Doubtfire - Not a Threat?

So, in class we've discussed how women are pitted against one another.  However, it seems as women age they become less of a threat.  Mrs. Doubtfire is a playful comedy that has a father (Robin Williams) desperate to spend more time with his children, who are in the custody of their mother.  In order to spend more time with them he concocts this persona of Mrs. Doubtfire, an elderly nanny. 

Usually, the nanny is an evil character - either the children hate her or the mother hates her because she's generally younger and prettier.  In this film; however, the nanny is an asset to the family.  I theorize that not only is the nanny awesome (come on, it's Robin Williams), but she is an older character who poses no threat to the mother in any way.  In fact, Mrs. Doubtfire becomes somewhat of a confidante for her.  Almost motherly.

Of course it cannot be that easy.  Mrs. Doubtfire *does* try to sabotage his ex-wife's romantic endeavors, yet it's not because he's pretending to be a woman and that's what women do.  This unique twist, though, while apparent, only disguises how women are portrayed in film.  Viewers do not conceptualize this as a feminine attribute, rather as a desperate man going to great lengths to keep his family together.

With the exception of The Crying Game and Tootsie, I cannot really think of many movies (or sitcoms, for that matter - hello, Bosom Buddies) that have men dressing as women who are aesthetically pleasing/plays to the male gaze.