itsnotme, the goal of Sara Schnerer was not to educate girls to want to marry Bnei Torah, but to educate them to know Torah themselves. At her times, 1920s, Jews in Poland were working and poor, and when men went to learn or visit their Rebbe (she was Beltzer) on shabbos/yomtov, their wives and daughters were sitting at home doing nothing. Many ended up leaving traditional Jewish life or worse.
My theory is that nowadays the modern idea that it is ok for masses to be bnei Torah without earning a living is part of the crisis. For this ideal, all girls need is to desire to marry a T’Ch, as you are saying – which is achieved by educators by telling girls stories about wife of R Akiva and avoiding telling them that many followed R Shimon b Yochai and failed and many followed work/learn of chachamim and succeeded. BUT for boys to become a T’Ch is obviously a much harder task that requires years of effort, not just inspiration. No wonder that there are lots of girls who inspire to marrky a T’Ch but not enough T’Ch.