In her remarkable 1861 book, The Woman of the Future, Concepcirn Arenal appropriated legal discourse, a wholly male domain, to plead the case for women's rights, in particular, education. Two different types of legal discourse emerge in her writing: that of written legislative law and that of courtroom advocacy. The computer can gather evidence of both; however, each mode of discourse requires different measures to weigh the significance of the findings. Easily obtainable repeat rates serve as an useful measure that can be related to what recognition psychologists call "retention intervals" and that are easily understood by non-statistically oriented literary scholars. Analysis focuses on Arenal's use of typography, lexicon, repetition, ideological challenge, interactive discourse, and prescriptive speech acts of the legal register to advocate the cause of women in nineteenth-century Spain.