It completely changes her character. Hermione is typically seen as a smart, loyal friend. An affair in fanfiction makes her seem unfaithful and morally loose, which is the opposite of how she's portrayed in the original books.
In fanfiction where Hermione has an affair, it drastically alters her character. In the original 'Harry Potter' series, Hermione is a symbol of intelligence and dependability. But this scenario in fanfiction makes her look like someone who can easily break her commitments. It takes away her positive traits and replaces them with negative ones, changing the way readers who know the original Hermione would perceive her.
It can mislead some readers. Since Hermione is a beloved and well - established character, this kind of fanfiction can make new fans who haven't read the original books thoroughly think that she might actually be useless. It distorts the original image of her being a strong, intelligent character.
She loses her moral compass. Normally, Hermione is a very ethical character, but in these fanfictions, she may start to see the dark arts as a viable option without hesitation. This could lead to her making choices that harm others, like casting harmful spells on those who oppose her.
She becomes more in tune with nature. As a centaur, Hermione is closer to the natural world, and this makes her more aware of the environment around her. For example, she starts to notice small changes in the forest that she might have overlooked as a human - shaped witch.
Hermione may become more cynical. The Hunter world is often dark and full of danger. Dealing with constant threats can harden her and make her view the world in a more jaded way compared to her relatively more optimistic self in the Harry Potter series.
It can distort the perception. People might start to see her more as a victim rather than the strong, intelligent character she is in the original. But it also adds a new layer of complexity.
In 'Hermione is a Lady' fanfictions, Hermione often becomes more refined. Her speech might be more polished, and she may be more conscious of propriety. For example, she might use more formal language when interacting with others. Her actions also tend to be more elegant. Instead of just rushing into things like in the original stories, she might take a more calculated and graceful approach.
Hermione would probably develop a much harder exterior. Bellatrix is a cruel and unforgiving figure, and Hermione would need to be tough to survive in her presence. She might become more calculating in her actions, always thinking several steps ahead. Her knowledge of magic would also take a different turn. She'd be exposed to dark magic, which would either make her more determined to fight against it or, in a more complex scenario, make her see some aspects of it that she hadn't considered before. This could lead to internal moral dilemmas that shape her character in new ways.
She becomes more confident. With Sirius' boldness and Remus' intelligence guiding her, she's more willing to take risks. For example, in some fanfictions, she might be more likely to stand up to bullies at Hogwarts.
She might become more confident. Since she is a pureblood princess, she has a certain status, and this could boost her self - assurance. She would no longer be the 'outsider' but someone with a legitimate place in the wizarding world hierarchy.
Hermione might become more morally ambiguous. Normally she is a very just and rule - following character, but by tricking Draco into Azkaban, she steps into a grey area. She could start to question her own actions and feel guilty.