La peregrina de Atón by Luis Melgar is a 392-page historical novel focusing on Iltani, the forgotten sister of Nefertiti, during the religious shifts of Akhenaten's reign. While the full text is not available as a free download, the first few chapters can be read through the official excerpt.
You can purchase the full physical or digital version through retailers like Amazon or Casa del Libro. La peregrina de Aton - Luis Melgar.pdf