@Shalom had summarized the two halachic approaches to learning the verse: "If two men get into a fight with each other, and the wife of one comes up to save her husband from his antagonist and puts out her hand and seizes him by his genitals, you shall cut off her hand; show no pity." Deuteronomy.25.11
A.) She touches the other fellow inappropriately and has to pay for embarrassment, figuratively cutting off her hand. (This is Rashi's reading.)
B.) She is attempting to injure the fellow in a life-threatening way, and thus can be stopped even by literally cutting off her hand. This is Rambam's reading.
What is the importance of mentioning a) a woman, b) the man is her husband, c) she tries to save him? I don't see how the conclusions would be different if the person was an unrelated male, and NONE addresses her pious intention (God knows!).