Simcha613: You’re ignoring the fact that both Shulchan Aruch and Rambam (and the Gemora and others) all pasken l’halacha that teaching girls Torah that they shouldn’t be learning is “tiflus”; which Rashi explains leads her to open immoralities.
And we see the fulfillment of this Shulchan Aruch/Rambam/Rashi in real life today where the girls who do not learn Torah shebal peh are overall much more Eidel and Ehrlich than those that are taught Torah shebal peh as part of their school curriculum, in defiance of the aforementioned Shulchan Aruch, Rambam, Gemora et al. And where these “over-educated” girls are far more likely to be dressing non-tznius and otherwise be acting publicly in loud and unrefined and unfeminine like manners.