What is the author's tone in Woman at Point Zero by Nawal El-Saadawi?

Nawal El Saadawi's Woman at Point Zero is written from a very outraged, subjective tone. Saadawi writes about meeting Firdaus and then allows Firdaus to become the narrator in order to share the story of her life. This leads the audience to pity Firdaus and allows them to share her experiences.