One reason could be jealousy. Maybe Hermione has achieved something great in the fanfiction, like getting a top grade in a really difficult subject, and her friends are envious. Another reason might be a misunderstanding. For example, if she's been spending a lot of time with a new character, her friends could misinterpret it as her neglecting them.
In fanfiction, character development often takes unexpected turns. It could be that the author wants to explore a different dynamic among the characters. So, her friends turning on her could be a way to show how Hermione copes with betrayal and isolation, adding more depth to her character.
One possible reason could be a misunderstanding. Maybe there was a miscommunication between Hermione and her friends, which led to them leaving her in the fanfiction. For example, if Hermione made a decision without consulting them, they might feel left out and decide to leave.
It could be a matter of loyalty being tested. If Hermione is accused of something she didn't do, and her friends don't believe in her innocence right away, they might leave her. In fanfiction, the author might be exploring the idea of how fragile friendships can be. Her friends could also leave if they feel that Hermione has changed too much, for example, if she becomes too strict or too obsessed with a particular project or cause.
One reason could be jealousy. Maybe her friends get jealous of Hermione's intelligence or achievements and act mean towards her in the fanfiction. For example, they might exclude her from certain activities or make snide remarks about her grades.
One possible reason could be a misunderstanding. Maybe her friends thought she was following but she got distracted by something, like a new spell she saw in an old book. So they unknowingly left her behind.
One possible reason could be jealousy. Maybe her friends are envious of Hermione's intelligence and magical abilities. In a fanfiction, this could lead them to betray her to gain an advantage or to make themselves look better. Another reason might be a misunderstanding. A miscommunication or false assumption could cause her friends to turn against her.
Perhaps there was a misunderstanding. Maybe Sakura said or did something that they misinterpreted, and instead of talking it out, they chose to abandon her.
One reason could be a misunderstanding. Maybe Hermione does something that Harry misinterprets, like getting too involved with her studies and seeming to neglect their friendship. Another could be outside influence. For example, if there are other characters who spread false rumors about Hermione to Harry, it might drive a wedge between them. Or perhaps Harry starts to develop different values and beliefs that clash with Hermione's, leading to a breakdown in their friendship.
One possible plot could be that Hermione's friends start believing false rumors about her. For example, they might think she's been stealing potions ingredients for personal gain when in fact she was framed. As a result, they shun her and exclude her from their group activities. This makes Hermione feel isolated and betrayed, and she has to find a way to clear her name and either regain her friends' trust or find new allies.
Perhaps she is forced to turn off her emotions in the fanfiction. For example, if there is some sort of dark magic or a powerful entity that compels her to do so. This entity might see her emotions as a weakness or a threat and manipulates her into shutting them down.
One possible reason could be excessive stress. Hermione is known for being a perfectionist, and the pressure to perform well on the OWLS might have gotten to her, causing her to make silly mistakes during the exams.