oomis, while girls and boys are equally chiuvim in fullfiling the the mitzvos. girls DO NOT do ONE SINGLE mitzva more after they turn 12. “
That is not really true. They go to the Mikvah when they get married. They light candles for Shabbos, they make a brocha on hafrashas challah (I might be wrong, granted, but are ketanos allowed to make that brocha?), they can in some circumstances and according to some poskim, constitute a mezumenes for bensching,when three girls over bas mitzvah age eat a seudah together, and they MUST fast. I think I have listed more than one mitzvah.