Love and attraction is also a prevalent theme. The idea of the two characters from opposite sides being attracted to each other creates a lot of drama and tension. It could be a forbidden love or a love that has the potential to change the whole wizarding world's future, and this makes for a very engaging story.
Another theme is redemption. Some fanfictions try to show Tom Riddle's possible redemption through his relationship with fem Harry. They might explore how her presence and influence could change his path towards the dark side. It's an interesting concept as it gives a new perspective on the character of Tom Riddle.
One common theme is the exploration of power dynamics. Since both Harry and Tom are powerful in different ways, in these fanfictions, when Harry is female, it adds a new layer to how they interact regarding power. For example, how a female Harry might resist or be attracted to Tom's power-hungry nature.
One common theme is the exploration of a different power dynamic. Since Harry is female, it changes the way she might interact with the powerful Tom Riddle. Another theme is the idea of redemption. Some fanfictions explore if a female Harry could be the key to Tom Riddle's possible redemption. Also, the theme of love and attraction often comes up, whether it's a forbidden love or a complex form of admiration between the two characters.
One common theme is the exploration of power dynamics. Since both Harry and Tom are powerful in their own ways, seeing how a female Harry would interact with Tom in terms of power is often explored. For example, who would be more dominant in certain situations.
Family and heritage play a big role. She has to deal with the fact that her father is one of the most feared wizards in history. There's often a theme of secrecy as well. She might have to keep her true identity a secret from her friends. Also, power is a theme. As Tom Riddle was powerful, she may inherit some of that power and has to decide how to use it, for good or evil.
I really like 'The Changed Path'. In this fanfiction, the fem Harry Potter has a unique dynamic with Tom Riddle. It shows how their interactions might change the course of the wizarding world. The author does a great job of building tension between the two characters, making it a very engaging read.
A very common theme is redemption. Tom Riddle, being the dark wizard he is, the soulmate bond with fem Harry can be seen as a chance for him to be redeemed. Also, the theme of self - discovery is present. Fem Harry and Tom Riddle both learn more about themselves through their connection. It's a complex relationship that is explored through these themes. For example, in many fanfictions, Harry tries to understand why she is connected to someone like Tom, which leads to her exploring her own values and beliefs more deeply.
The exploration of good and evil is a big theme. Given Tom's inclination towards the dark side and Harry's role as the 'Chosen One' for good. Also, there's the theme of destiny. Fanfics often play with the idea of whether their destinies are set in stone or can be changed by their relationship. In many of these fanfics, there's also the theme of secrecy, as their relationship is often something that has to be hidden from others in the wizarding world.
Love and obsession are also common. The idea of a female Harry being drawn to Tom Riddle's allure despite his dark side, or vice versa. It can be a complex love that is filled with moral dilemmas. Like in some stories, Harry might try to redeem Tom, which is a very emotional and complex theme.
Another theme is redemption. Some fanfictions show Tom Riddle being redeemed through his relationship with Harry Potter. It's an interesting take on the characters as it gives Riddle a chance to change his fate.
A theme that is often explored is the exploration of the characters' pasts. Since Tom Riddle jr has a very troubled past, fanfictions might dig into it more deeply. And for Harry, his connection to Tom through the Horcruxes also plays a role. By exploring their pasts, the fanfictions try to show how they could have a different relationship than what was shown in the original books.