It could be Hermione, if it's related to the Harry Potter universe. She is extremely brainy and would fit the description well. There might also be other new female characters who are introduced specifically in this fanfic to add more depth to the story.
It could be about the adventures and challenges that Harry and the brainy girls face together. Maybe they are on a quest to solve a mystery in their magical world.
The following are a few recommended novels that are good and smart for girls to read:
1. Author: Smiling Beauty
2. Author: Shi Jing
3. Author: Orange and White
4. Lychee is very sweet
5. Author: He Yanshan
6. Author: Hai Qing takes a swan
7. Author: Lu Yao
8. The Queen's Survival Diary by Sword Bean
9. I Am This Woman Author: Butterfly Shadow Under the Moon
10. Survival Manual for Concubine Women by Yuka Mii
11. "Coincides with the Rain" Author: Shen Xiaozhi
12. Princess Ming Hua by Chen Deng
The female protagonists in these novels all displayed wisdom and brains. They were able to cope with all kinds of challenges and difficulties in the story. I hope you like these novels!
A 'brainy barker fanfic' could be about a very intelligent dog (the barker). It might tell stories of this dog solving mysteries in its neighborhood, using its smarts to outwit villains or find lost items. For example, it could be that the dog has an uncanny ability to understand human speech and uses this to help the local police.
A third plot could involve a time - travel adventure. Brainy's technology malfunctions and sends him and Nia to a different era. They have to figure out how to get back to their own time while also making sure they don't accidentally change history. In this era, they meet different versions of their friends and enemies, and they must use their wits and powers to navigate this strange new world and find a way home.
The main character is likely the Brainy Barker itself. It could be a Labrador or a Poodle, known for their intelligence. There might also be an owner or a trainer who plays an important role in the story, guiding the dog's actions and being part of its adventures.
There's a good chance that his friends like Ron and Hermione would also be main characters. They were always by his side in the original series and would probably play important roles in this fanfic as well, perhaps helping Harry explore and understand his new - found aspects of his magic.
The fanfic might focus on the relationships between Harry's future children. For example, they could have sibling rivalries or strong bonds of friendship. They might also have different personalities - one could be really outgoing and brave like Harry, while another could be more shy and studious. And they would all be growing up in a world that's still recovering from the war, so that could add a lot of depth to their stories.