If a frum woman is going to get a job outside the home, and goes to law school, she enters the career tract that can result in one becoming a judge. The same holds true of frum men, but many frum men prefer to concentrate on learning, which reduces those likely to end up becoming judges.
Indeed, since the “best” of the frum men focus their vocational energy on learning (e.g. teaching within the Torah world), and the “best” of the frum women who choose to work outside the home are not so distracted, one should expect to find increasing number of hareidi women doing well in professions. They have an added advantage over non-chareidi women in that they are in a community in which many women stay at home, creating a large pool of reliable child-care opportunities.