Excerpt from الفقه الميسر,

the book of purification, Acts that Correspond to Human Nature (Sunan Al-Fitrah) Point 2: Circumcision For men: Removing the excess foreskin that covers the حشفة (the tip of the penis). Ruling: Wajib Wisdom: Prevent accumulation of Najasah (impurity) in the foreskin For women: Removal of the visible tip of the clitoris. The scholars of Fiqh describe this part to look like عُرف الديك (cockscomb). Ruling: Sunnah Wisdom: Reduce intense sexual desire Note: I'm not too familiar with the actual process, but the objective is certainly not to pacify her Shahwah.