[Avodah] bat mitzva "bo bayom"

[menucha]

I always wondered why that Mishna is seen as the "concept of Jewish 
womenhood"   and not taken at face value as "the mitzvot for which women 
die in childbirth". Cynically I could say that it "made it big" because 
of its place in the davening.
any sources for taking this mishna for more than it says?
BTW, see the parallel for men in Kohelet Rabba on "Eit Laledet."
menucha


Micha Berger wrote:

>The mishnah in Bameh Madliqin lists three mitzvos, which arguably
>implies that they hold a unique concept of Jewish womanhood. Of them,
>only hafrashas challah is appropriate, unless the party is Friday night
>and the girl bentches licht herself.
>
>  
>