Often, there are plotlines where Hermione as a pureblood princess has special powers or abilities that come with her status. For example, she might have an innate magical ability that is unique to pureblood princesses in the fanfiction world. This could then be used to save the day in various situations, like fighting against dark wizards or solving complex magical mysteries.
One common theme could be the exploration of Hermione's French heritage. It might involve her having a different family background in France, with perhaps Pureblood relatives who have their own set of traditions and values. Another theme could be her interaction with the French wizarding community. Maybe she attends a French wizarding school for a while and has to adapt to different teaching styles and social norms there.
Typically, they focus on Hermione having a pureblood princess identity. This often means exploring her family background more deeply, perhaps creating a whole new lineage for her. For example, some might give her noble wizarding ancestors.
There could be 'Hermione, the Hidden Pureblood Princess'. In this fanfiction, Hermione discovers her pureblood princess heritage in a very unexpected way. It delves deep into her relationships with other characters like Harry and Ron, and how they react to this new side of her. It's a really engaging read.
One common plotline could be that Hermione is betrayed by her friends in Hogwarts. For example, they might believe false rumors about her and turn their backs on her. Another could be a romantic betrayal, like if Ron, in a different take on the story, cheats on her or breaks her heart in some way. Sometimes, she could be betrayed by the wizarding community as a whole, perhaps being wrongly accused of dark magic and no one believing in her innocence.
In some fanfictions, the focus could be on Hermione's child's unique abilities or challenges. Since Hermione is very intelligent, her child might inherit her smarts but also have some special magical gift that she has to figure out how to handle on her own. Maybe the child has an uncontrollable power and Hermione has to search for ways to help the child manage it without a partner to support her. It could also involve her reconnecting with old friends from Hogwarts who either support or question her decisions as a single mother.
Often, there are plotlines centered around protecting Hermione. Since werewolves are sometimes seen as dangerous, the werewolf mate has to prove that he can keep Hermione safe, not only from the outside world but also from his own werewolf side during full moons. And there could be a plot where they work together to change the perception of werewolves in the wizarding society.
One common plotline could be Hermione forming a closer friendship with Fleur. Since she hates Ron, she might turn to Fleur for support and they could end up having adventures together, perhaps in the wizarding world outside of Hogwarts.
Often, there are plotlines about him using his vampire abilities to fight against dark forces in the wizarding world. His enhanced strength and speed could give him an edge in battles.
One common plotline is the journey of Hermione and Ron (assuming she's married to Ron in the fanfic) as they prepare for the baby. It might involve them decorating the nursery, choosing baby names, and dealing with the excitement and nervousness of impending parenthood.
One common plotline is Sirius being protective of Hermione. He might see her intelligence and bravery and feel drawn to her. He could protect her from various threats in the wizarding world, like Death Eaters or other dark forces.