Aisha Abdel Gawad’s debut novel is a coming-of-age story about two teenage girls. They’re twins living in Brooklyn. Their older brother is getting out of prison. Their parents are immigrants from Egypt. And the book’s title, “Between Two Moons,” refers to the time period when the book is set. The entire novel takes place during one month of Ramadan. I asked Aisha Abdel Gawad where she got the idea to use the holiday as a frame.