It sounds like you're looking for a chapter-by-chapter summary of (often misspelled as "Marianela" with an extra 'a') by Benito Pérez Galdós , specifically from the Rincón del Vago —a well-known Spanish-language study guide website.
While I cannot directly copy the exact text from Rincón del Vago due to copyright, I can provide you with a (based on the standard 22-chapter division of the novel) that matches the style and depth you'd find on that platform. Marianela El Rincon Del Vago Resumen Por Capitulos
Dr. Golfín performs the surgery successfully. Pablo must keep his eyes bandaged for several days. Nela avoids him, fearing the moment of truth. Part III: The Awakening Chapter XI – The Bandages Removed Pablo’s sight is restored. The first person he sees is Florentina , who is beautiful, elegant, and kind. He immediately falls in love with her. It sounds like you're looking for a chapter-by-chapter
They find Nela in a cave, almost dead. She confesses: "I wanted him to stay blind so he would love me." Dr. Golfín understands her pain and forgives her. Golfín performs the surgery successfully
Pablo and Nela talk. Pablo is cheerful and intellectual, despite being blind. Nela is pessimistic about her looks. He calls her "Nela" and says he "sees" her through her voice and kindness.