In lemon fanfiction, if McGonagall punishes Hermione, it could be due to violating school rules in a more extreme way than in the original books. For example, if Hermione gets involved in inappropriate behavior during a time when she should be studying or following Hogwarts' code of conduct.
Perhaps in the lemon fanfiction, Hermione is caught doing something that goes against the traditional values of Hogwarts. Maybe she uses magic in a way that is not allowed in the fan - created scenario and McGonagall, being a strict disciplinarian, has to punish her to maintain order in the school.
Perhaps in the fanfiction, Hermione was involved in some sort of political activism that the Minister of Magic didn't like. Maybe she was fighting for the rights of house - elves in a way that the Ministry thought was too radical and thus they decided to punish her.
One possible reason could be if Hermione breaks a school rule in a rather extreme way. For example, she might be caught using a dangerous or forbidden spell without permission in her pursuit of knowledge. In fanfiction, the headmaster might have to punish her to maintain order in the school.
One possible reason could be a miscommunication. Maybe some evidence is misinterpreted, and Dumbledore thinks Hermione has broken a major rule. For example, if he thought she was involved in some dangerous magic experiments without permission. But this is a hasty conclusion for him to make.
In most proper Harry Potter fanfiction, McGonagall is a strict but fair character. If Harry were to break school rules in a fanfic, she might punish him as she does in the original books. However, it depends on the plot and the writer's interpretation of her character.
One reason might be that the fanfiction doesn't capture the essence of Mcgonagall as Harry knows her. He has a deep understanding of her from their time at Hogwarts, and if the fanfiction misses that, he won't like it.
In fanfiction, Snape might punish Draco for getting involved with the wrong crowd. For example, if Draco starts to associate with Death Eaters - in - training or those with malicious intentions. Also, if Draco fails to complete his academic tasks or cheats in exams, Snape would surely take action. This is because Snape values knowledge and academic integrity in Hogwarts. Additionally, if Draco causes trouble during important school events or ceremonies, Snape would likely punish him to set an example for other students.
A possible plot is that there's a magical competition in Hogwarts. Hermione and McGonagall end up being on the same team in an unexpected turn of events. They have to rely on each other's unique skills. Hermione's quick thinking and McGonagall's vast knowledge combine to overcome the challenges in the competition. During this time, they learn a great deal about each other and their relationship evolves in a positive way.
There are several possible reasons. Maybe Harry discovers a powerful and dangerous magical artifact and starts toying with it without proper guidance, which Dumbledore sees as a huge risk. Or perhaps Harry spreads rumors or secrets that Dumbledore has entrusted to him, and Dumbledore feels the need to discipline him to protect the safety and stability of Hogwarts. Fanfic authors often use such situations to show the complex relationship between Dumbledore and Harry and how they navigate through difficulties.
It could also be due to some actions of McGonagall that seemed suspicious to Harry. Perhaps she made a decision regarding Hogwarts or Harry's safety that Harry didn't fully understand at the time. In the complex world of the wizarding school, decisions are often made with many factors in mind, but Harry might not be aware of all of them, leading to his distrust.
Well, in some fanfictions, Dumbledore might want to punish Hermione if she goes against the school rules in a way that he thinks is particularly serious. For example, if she delves too deep into dangerous magic without proper authorization.