One possibility is that the daughter could inherit her father's strength and leadership skills. She might grow up in Wakanda, learning the ways of the kingdom from her mother Nakia and the other elders. She could also have a special connection to the Panther Goddess, just like T'Challa did.
She could bring new ideas to Wakanda. With her unique perspective, being the child of two very different but important people, she might introduce reforms in areas like education or healthcare.
One idea could be a story where Nakia discovers a hidden threat to Wakanda while on a solo mission abroad and she has to secretly communicate with Black Panther (T'Challa) to stop it. They face challenges in coordinating without alerting the enemy and their relationship deepens through the shared danger.
Show their shared history. Recall their past adventures together, like when they first met or a significant mission they worked on. This can create a sense of connection and loyalty.
The Black Panther comic has its own unique fictional universe and narrative that is not related to the Black Panther Group. The comic's creation was based on comic book concepts and storytelling rather than any direct connection to the group.
One great 'Black Panther' fanfiction is 'The New Wakanda' which explores a Wakanda that has to face a new, unseen threat. It has great character development for T'Challa and his sister Shuri.
The Legend of Black Panther is an audio novel that can be listened to for free. However, the search results did not provide clear information on which platform could be listened to for free. Therefore, I don't know the specific platform for free listening to books.