At the age of 12, girls could read many different types of books in addition to novels, including: 1. Popular science books: Popular science books can help girls better understand the world and science, such as books about nature, technology, the universe, etc. 2. Biography and autobiography: Reading biographies and autobiographies can help girls understand the life experiences and achievements of different characters, and can also cultivate girls 'reading ability. 3. Poetry and prose: Poetry and prose usually have beautiful language and rhythm, which can help girls cultivate literary accomplishment and aesthetic ability. 4. Self-help books: Self-help books can guide girls to think, self-explore and grow. For example, books on self-cultivation, interpersonal relationships, mental health, etc. 5. History books: Reading history books can help girls understand historical events and characters, and can also cultivate a girl's cultural heritage and historical accomplishments. In addition to the books listed above, girls can also read various types of novels, storybooks, and children's literature to help girls develop their interest in reading and understanding. However, parents need to be careful when choosing books for their children. They should avoid choosing books that are too violent, erotic, or unsuitable for their children's age to ensure that their children's reading is safe and healthy.