The themes usually revolve around power and destiny. As Regulus' daughter, she might inherit certain powers or a sense of purpose. It could be related to the fight against Voldemort. Also, there's the theme of redemption. Regulus had his own journey of redemption, and fem Harry might continue that in some way, perhaps by using his knowledge to make the wizarding world a better place.
One common theme is identity. Fem Harry has to come to terms with being Regulus' daughter and how that changes her perception of herself. Another is family legacy, as she has to deal with the Black family's reputation.
The theme of self - discovery is quite prevalent too. Fem Harry is in a different position in the wizarding world, and through her relationship with Regulus, she discovers more about herself. Regulus also goes through his own self - discovery journey as he gets closer to fem Harry.
One common theme is redemption. Regulus Black's past actions often lead to a journey of redemption in these stories, especially in relation to the female Harry Potter character. Another theme is the discovery of hidden family secrets. Since both characters have complex family backgrounds, exploring those secrets is often part of the plot. And of course, love is a major theme, showing how their relationship develops against the backdrop of the wizarding world.
The theme of identity is often explored. She has to figure out who she is in relation to her father, the Black family, and the wizarding world at large. There's also the theme of friendship. In many fanfictions, she forms bonds with other characters that help her navigate through the difficulties. For example, she might befriend characters who knew her father or are also dealing with their own family issues. And power, both magical and political, can be a theme as the Blacks were a powerful family.
One common theme is family legacy. Since she is the daughter of Regulus Black, there's always the exploration of what it means to carry on the Black family name and all the baggage that comes with it, like the family's dark past and their pure - blood ideology.
One common theme is identity struggle. Since she's the daughter of Hades, she has to figure out where she belongs in both the wizarding world and the realm of the gods. Another theme is power and its control. Her powers from Hades are often very different from typical wizarding magic.
One common theme is identity. The fem Harry has to figure out who she is now that she's the daughter of Morgana. Another theme is power. Since Morgana was a powerful figure, the fem Harry often has to deal with the implications of having that power or the potential for it. There's also the theme of acceptance. She has to face the wizarding world's reaction to her new identity, whether it's acceptance or rejection.
One common theme is redemption. Regulus was once a Death Eater, and in these fanfics, his journey towards redemption often intersects with Harry's path. For example, in many stories, Harry helps to reveal the good that was still in Regulus despite his past mistakes.
One popular one could be 'The Daughter of Regulus'. It has an interesting take on how Harry, as a female, being Regulus' daughter would navigate the wizarding world. It shows her dealing with the legacy of her father and her own path in Hogwarts.
One common theme is identity. Hermione has to grapple with who she really is, being the daughter of Regulus. Another is family secrets. Discovering that she is Regulus' daughter means there are likely many things she doesn't know about her family. And then there's the theme of legacy, as she has to decide how to carry on Regulus' name and any unfinished business he might have had.
Family drama is often present. There could be conflict with her 'father' Loki, or she might be trying to find her place in Loki's family. On the other hand, she could also have a complex relationship with the characters from the Harry Potter side, like trying to fit in with the Weasleys or deal with Dumbledore's expectations while being Loki's daughter.