The presence of a twin could make Hermione more collaborative. Instead of always trying to do everything on her own, she would learn to work with her twin. They could study together, solve mysteries together. This would change her from a somewhat solitary learner to someone who is more open to teamwork, which would be a significant shift in her character development.
Hermione might become more protective. If her twin is in any sort of danger or facing difficulties, she would step up more. For instance, if the twin gets bullied for being different, Hermione would use her wits and knowledge to stand up for them.
She could also become more self - aware. Comparing herself to her twin, she might notice certain traits in herself that she hadn't before. Maybe her twin is more carefree, and seeing that makes Hermione realize she's too uptight sometimes. So, she would start to loosen up a bit. In the long run, this newfound self - awareness would make her a more rounded character.
If Hermione was adopted by the Cullens, her character would likely become more attuned to the vampire world's values. She might be more secretive like the Cullens, as they hide their true nature. Her studious nature could be redirected towards understanding vampire lore. For example, instead of poring over Hogwarts textbooks, she'd be delving into books about vampire history and abilities. This new family dynamic would also make her more cautious in her interactions, knowing the potential danger her new family could face if exposed.
Well, her character would likely become more guarded. Snape is not one for open displays of affection or warmth, so Hermione might learn to hide her emotions more. However, she would also be exposed to Snape's vast knowledge of potions and the Dark Arts in a more intimate way. This could make her more of an enigma to her friends. She might start to question some of the Gryffindor values she once held dear, as Snape would surely instill in her a different set of beliefs, at least to some extent.
Well, if Hermione was adopted by Remus, her character might become more in tune with the werewolf side of things. She could be more empathetic towards outcasts, like Remus was. Her studious nature might also take on a different angle, perhaps delving into the study of lycanthropy more deeply. And she might grow to be more cautious and aware of the prejudices in the wizarding world, having seen Remus face them.
Hermione might become more confident in her Slytherin - like traits. Since Blaise is her brother, she could learn from his Slytherin ways of being cunning and resourceful. This would add a new layer to her Gryffindor - centered character.
It would make her more complex. Usually, Hermione is very rational and follows the rules. But having a crush on Dolohov, a known antagonist, would make her question her own judgment. She might become more secretive as she doesn't want her friends to know about her feelings. This is a big change from her usually open - minded self when it comes to sharing her thoughts and feelings with Harry and Ron.
In some fanfictions, Hermione's adoption might make her more self - reflective. She may question her identity more often, leading to a deeper understanding of herself. For example, if she discovers she was adopted from a different magical culture, she might explore that culture and in turn, become more open - minded.
As a ghost, Hermione might become more detached from the physical world. She could be less focused on grades and more on the spiritual aspects of Hogwarts. Her patience might also increase as she now has a different perspective on time.
In such a fanfiction, Hermione's character could become more rebellious. Sirius has a wild streak, and growing up with him might make Hermione less likely to blindly follow the rules. She could be more confident in taking risks and standing up for what she believes in.
She would probably become more guarded and secretive. In the original story, Hermione is quite open with her friends about her thoughts and feelings. However, in the Malfoy household, she'd have to hide a lot of her true self. Her character development might see her becoming a master of deception, pretending to go along with the Malfoy's views while secretly working against them. This would add a whole new layer of complexity to her personality as she tries to balance her true self with the persona she has to present to the Malfoys.
Hermione would probably develop a stronger sense of responsibility towards the people of England. In the wizarding world, she was mainly concerned with the rights of house - elves and her friends. But as a princess, she has a whole kingdom to look after. This could make her more cautious in her actions. She might also become more aware of her appearance and how she presents herself, as she is now a public figure representing the monarchy. But she would still be the same Hermione at heart, always ready to fight for what she believes is right.