He might be motivated by a desire to protect Harry's reputation. Fanfiction can be full of wild and untrue stories, and Dumbledore doesn't want Harry to be misrepresented.
Well, he might face a lot of magical obstacles. Maybe there are spells protecting the fanfiction in some sort of enchanted library or digital realm. He'd have to use his vast magical knowledge to break through those barriers. And once he gets it, he could use it to better understand Harry's place in the wizarding world's public perception.
Harry might initially be confused. He has always looked up to Dumbledore, so when he realizes Dumbledore is trying to control him, he could start to question everything he thought he knew about their relationship. He may become more rebellious as a result, trying to break free from Dumbledore's influence and make his own decisions.
Harry might be initially confused. He has just found out about his lordship and now Dumbledore wants to take it away. He would likely question Dumbledore's motives.
Maybe Dumbledore believes Harry isn't ready for the responsibilities that come with the lordship. Harry is still young and has a lot to learn about the wizarding world's politics and social structures. Dumbledore may want to protect Harry from making hasty or unwise decisions in a position of power.
It could also be that Dumbledore has some secrets that he's afraid Hermione will uncover if she's left to her own devices. Hermione is known for her inquisitive nature. So, to keep these secrets hidden, he attempts to control her. For instance, if there are some hidden aspects of Hogwarts' history or certain faculty members that he doesn't want exposed, he might use control over Hermione to prevent her from delving too deep.
Dumbledore, as Harry's guardian in the fanfiction, would probably use his influence in the wizarding world. He could make sure that Harry is taught by the best teachers at Hogwarts. He'd also be there to offer advice and guidance, especially when Harry faces challenges like dealing with Voldemort or other dark forces. For example, he might teach Harry some advanced defensive magic privately to better protect himself.
Well, in some fanfictions, Harry might attack Dumbledore if he discovers that Dumbledore has been using him as a pawn in a bigger game all along. This feeling of betrayal could drive him to lash out. Also, if there is a prophecy that he misinterprets to mean Dumbledore is a threat to his future or the future of his friends, that could be a motive.
Snape can be a prominent character. Given his complex relationship with Dumbledore and Harry, his perspective could add a lot to the story. He might have some insights into Dumbledore's actions that Harry doesn't know about, and his reactions to Harry's blaming could vary from being scornful to having a moment of understanding. Luna Lovegood could also be a part of it. Her unique view of the world might make her offer some different viewpoints on the situation between Harry and Dumbledore.
She would probably be defiant. Hermione is a strong - willed character. She values her independence and her ability to make her own decisions. So, she would likely question Dumbledore's motives and resist his control. For example, she might start her own investigations secretly to find out why Dumbledore is acting this way.