Who is Firdaus from Woman at Point Zero and what is their importance?

Firdaus is the main character of this story, and she acts as the narrator of Chapter 2. She holds her head high, calmly moves her hands and has a stern look in her brown eyes. She is imprisoned and sentenced to death for killing a man, but she refuses to sign an appeal to lessen her sentence to life imprisonment. At first, she refuses to meet Nawal El Saadawi, but she finally agrees to share her terrible tale.