Haifaa al-Mansour did write a novel titled "The Green Bicycle" in 2015, which is an adaptation of her screenplay for the film "Wadjda." Thank you for bringing this to my attention.
"The Green Bicycle" follows the story of 11-year-old Wadjda, who challenges the societal norms and gender restrictions in Saudi Arabia by saving money to buy a bicycle. The novel delves into Wadjda's determination and resilience as she navigates the obstacles and limitations placed upon her as a young girl in a conservative society. It explores themes of independence, personal freedom, and the courage to pursue one's dreams.
The novel, like the film, sheds light on the struggles faced by women and girls in Saudi Arabian society, offering a glimpse into their experiences and aspirations. While the film "Wadjda" was the first full-length movie shot entirely in Saudi Arabia, the novel adaptation allows readers to delve deeper into the thoughts, emotions, and inner world of the protagonist.