I’ve never heard of women staying up shavuos night to learn. Not only is it not a minhag for the women to do this, women don’t have a chiyuv to learn at all (aside for what they need to be mechanech children properly). I am absolutely NOT saying women shouldn’t learn (in general). I just can’t comprehend why a woman would stay up through the night. It’s a new & strange concept to me. (I hope I don’t sound narrow minded. I don’t mean it’s wrong or unacceptable, it’s just new to me.) “
Maybe in your neck of the woods it is unusual, but out here it is very commonplace. Women go to shiurim ALL the time here. We are no longer of the mindset that only men are capable of learning. that is not to say that the women are learnng Gemorah (they are not), but they are learning halacha, Tanach, hashkafa, and dinim based in the Gemorah. The schoolgirls virtually ALL stay up all night learning chumash, Megillas Rus, hilchos shavuos, etc. many of them walk two miles or more, to be by their limudei Kodesh teachers for the night, then return home the next day after davening. We are not that generation of our mothers and grandmothers, the Tzenna U’renna generation. Today’s frum female is a great deal more learned and connected to limud Torah, than was the previous generation. And that’s a great thing, especially for the little kids whose fathers are not home in the evening to help them study their homework for whatever reason.