Perhaps it's because the fanfiction shows Hermione in a new and interesting light. Maybe it portrays her with unique character developments or puts her in unexpected and exciting situations that Dolohov finds captivating.
She could use her intelligence and love for books. Hermione is known for her studious nature. So she might apply her knowledge of storytelling and literary techniques to manage the Dolohov fanfiction.
Hermione is always eager to understand different magical elements and characters. Dolohov, being a part of the wizarding world, has his own story. Fanfiction might offer unique interpretations of his actions and his place in the wizarding community. Hermione's curiosity could stem from her desire to study all aspects of the wizarding world, even those that are fictionalized in fanfiction. She may be looking for new insights or just be interested in the creativity that fanfiction writers bring to a character like Dolohov.
There are indeed some pieces of fanfiction on this topic. The concept is quite interesting as it challenges the normal character dynamics. In some of these fanfictions, the authors might use Hermione's attraction as a means to explore the gray areas of morality. They could show how even a character like Hermione, who is firmly on the side of good, could be drawn to someone like Dolohov, perhaps due to his power or a sense of mystery surrounding him. It's an interesting take on the characters that makes you think about their personalities in different ways.
One possible plotline could be Hermione getting to know Dolohov in an alternate universe where he has a different side to him. Maybe she discovers some hidden good in him and tries to redeem him.
One possibility is that the fanfiction presents unique plotlines involving Hermione. It could place her in different magical scenarios or make her interact with characters in unexpected ways. This novelty can be very appealing. Also, if the fanfiction develops Hermione's intellectual side further, showing her solving even more complex magical problems, that could also impress Rowlw.
Hermione's leadership skills might also play a part. If she takes charge in a group or a mission, and is able to guide others effectively towards a common goal. Rodolphus, seeing her lead with confidence and intelligence, would surely be impressed.
Hermione would likely react with her usual intelligence and quick - thinking. She might start by trying to analyze Dolohov's motives and weaknesses. She could also try to find a way to communicate with the outside world, perhaps using magic in a very discreet way.
She is likely to be defiant. Hermione has always been a strong - willed character. So she would probably not go down without a fight. She might immediately start looking for ways to escape or undermine Dolohov's plans.
One common theme is the battle of wits. Hermione is known for her intelligence, and when facing Dolohov, it becomes a test of who can outsmart the other. Another theme is the power of magic. Writers often explore different magical abilities that Hermione can use against Dolohov. Also, the theme of good vs. evil is present, as Hermione represents the good side and Dolohov is on the dark side.