Hermione's development would be a struggle between her true self and the persona she has to adopt. She would constantly be in a moral dilemma. On one hand, she wants to stay true to her values like friendship and justice. On the other hand, she has to pretend to support the Death Eaters' cruel ways. This internal conflict could lead to her becoming more introspective. She might start to question the very nature of good and evil, and through this journey, she could emerge as a more well - rounded and wiser character, ready to fight against the darkness in a more nuanced way.
Harry's character would be a complex mix. He might have a great deal of power and skill in the Dark Arts, which would set him apart from the Harry we know. But deep down, there could still be a spark of the good that his parents had. As he realizes the true nature of the Death Eaters, he could go through a transformation, perhaps becoming a sort of anti - hero who uses his dark - learned skills for good. He'd also have a different view of the wizarding world, seeing it through the eyes of those who oppose the Order of the Phoenix, and this would create a lot of internal conflict as he tries to find his place.
One way the storyline could develop is that Hermione would struggle with her identity. She might initially be in denial about her father's Death Eater past. For example, she could discover it accidentally and then have to face the prejudice from her friends at Hogwarts. This would create a lot of internal conflict for her as she has always been a defender of justice and against the Dark Arts.
The story could develop with Hermione trying to escape on her own. She might use her intelligence to find weaknesses in the Death Eater's security. For example, she could figure out the patterns of their patrols and use her magic to create distractions.
Hermione's character would likely be more complex. The founders had their own quirks and beliefs. If she was under their influence from a young age, she would inherit some of those traits. For instance, if raised by Salazar Slytherin, she might have a more calculating side, while still maintaining her good nature. This combination would make her a very interesting and different character compared to the Hermione we know in the original books.
Hermione's character would become more complex. She might start off being more in tune with the dark side, but her natural goodness could still be there. It would be like a battle within her. She could have a very different style of magic, more in line with Bellatrix's chaotic and powerful style. However, she would also face a lot of internal conflict as she realizes the true nature of the things she's been taught.
One way it could develop is through the use of dark magic coercion. Maybe a powerful Death Eater discovers Hermione's intelligence and decides to use Imperius Curse to make her his slave. He could force her to use her magic skills for his evil purposes, like brewing dangerous potions or stealing valuable magical artifacts.
Well, in some fanfictions, Hermione might use her superior intellect. She could outwit the Death Eaters by setting up elaborate magical traps. For example, she could use transfiguration magic to create objects that suddenly turn into something dangerous when the Death Eaters approach. Another way could be through her extensive knowledge of potions. She might create a potion that incapacitates or kills them when they come into contact with it.
She could use her intelligence. Maybe she could pretend to cooperate while actually looking for loopholes in their plans or trying to send hidden signals to her friends. For example, she could subtly mislead them about the location of important items or people.
Well, it could make Hermione a lot more conflicted. Growing up with Death Eater parents, she might constantly struggle between the values she's exposed to at home and the ones she discovers at Hogwarts. For example, she might initially be more hesitant about befriending Harry and Ron due to her family's possible prejudice against 'blood traitors'. This could lead to a more complex and nuanced character arc as she gradually breaks away from her family's ideology.
She would probably first try to resist. Hermione is known for her strong will, so she'd likely fight back using her magic skills, even if it's a losing battle at first.