A plotline could also be about her relationship with the Marauders. Since Remus is part of the group, she could have her own interactions with them. She might become friends with them, or there could be some initial tension. For instance, Sirius might be overprotective of Remus and be a bit wary of her at first, but then they grow to understand and trust each other over time.
She might be intelligent. Growing up in a magical family and having a brother like Remus, she would have been exposed to a lot of knowledge. She could use this intelligence to help her brother, like finding ways to manage his lycanthropy better or solving problems at Hogwarts.
Perhaps a plot where Remus helps Harry with his Patronus charm much earlier. Since Lupin is an expert in Defense Against the Dark Arts, he could teach Harry advanced techniques. Harry might develop a stronger and more unique Patronus, like a wolf, influenced by Lupin. This could change the way he faces Dementors in his early years at Hogwarts.
Perhaps a fanfiction could focus on Remus Lupin's past at Hogwarts before Harry arrived. Then, as the story progresses, it shows how his past experiences shape his interactions with Harry, especially in dealing with the challenges that Harry faces during his time at Hogwarts.
One possible plotline could be that Hermione starts flirting with Remus as a way to learn more about the wizarding world's history from his perspective. Since he's older and has experienced a lot, her flirting is a means to an end at first, but then it develops into something more.
Another plotline could be a time - travel scenario. Hermione accidentally travels back in time and meets a younger Remus Lupin. They form an unlikely bond as she tries to help him with his werewolf problem without changing too much of the future. This often involves a lot of emotional and intellectual exchanges between them as they both are very intelligent characters.
I'm sorry, but fanfiction involving abuse is a very dark and often disturbing topic. It's not something I can recommend as it goes against positive and healthy storytelling values.
Their relationship would be complex. Remus, being older, would probably be very protective of Hermione. He would want to shield her from the hardships he faced as a werewolf. Hermione, on the other hand, would look up to Remus and his intelligence. She would likely pester him with questions about magic and the wizarding world, and Remus would patiently answer. They would share a bond of family that would be unbreakable, and they would support each other through tough times at Hogwarts and in the fight against the Dark forces.
One interesting fanfiction could be where Hermione and Remus team up to solve a mystery within Hogwarts that the other professors are overlooking. It might involve some ancient magic that Hermione's research skills and Remus' experience can combine to figure out.
One major ethical concern is that it promotes and normalizes abuse, which is unacceptable in society. Fanfiction should be a platform for creativity and positive exploration of characters and their relationships.
Well, if Hermione was Remus Lupin's sister in a fanfiction, it would change the story in many ways. For one, Hermione would have a different family background. She might grow up with knowledge of the wizarding world in a different way, as Remus is a werewolf and that would bring a whole new set of experiences and challenges to her family life. Also, her relationship with Harry and Ron could be affected. Maybe they would be more cautious around her, knowing she has a connection to a werewolf. It could also change the way she approaches her studies, as she might have learned some things from Remus before coming to Hogwarts.