Sure. There's a whole world of fanfiction out there, and the concept of Hermione being Merlin's granddaughter is an interesting one that could attract many writers. It could involve stories where Hermione discovers her relation to Merlin through some ancient magic or a hidden family secret. This could lead to all sorts of new plotlines and character developments within the fanfiction.
One possible plot could be that Hermione starts having strange dreams or visions that lead her to discover a hidden family connection to Merlin. She then embarks on a journey to learn more about her heritage, which takes her to ancient magical places and uncovers long - lost spells or powers related to Merlin.
She'd probably be shocked. Hermione has always been on the side of good, and finding out she has such a dark family connection would be a huge blow. She might initially deny it or try to find evidence that it's a mistake.
Often, she is a character full of contradictions. On one hand, she has the potential for great power due to her family lineage. On the other hand, she is determined to be different from Grindelwald. In fanfiction, this can lead to interesting storylines where she has to face challenges from both those who fear her because of her family name and those who want to use her for their own dark purposes.
One implication could be a huge internal conflict for Hermione. She has always been on the side of good, and finding out she has such a dark connection would be a shock. She might question her own identity and her place in the fight against the dark arts.
Yes, there are likely some fanfictions out there with this concept. The Harry Potter fandom is vast and full of creative interpretations. You can try searching on popular fanfiction websites like Fanfiction.net or Archive of Our Own (AO3).
One common storyline is her struggle to redeem the family name. Since Grindelwald was a dark wizard, she might be on a mission to prove that her family can also be a force for good in the wizarding world. This could involve her doing heroic deeds and showing that she is not like her infamous ancestor.
If Hermione was Dumbledore's granddaughter in fanfiction, it would likely make her an even more important figure at Hogwarts. The teachers might treat her differently, perhaps with more respect or higher expectations. And she could have a different role in the Order of the Phoenix too, being related to Dumbledore. She might be given more dangerous or important tasks.
One great 'Hermione and Merlin Fanfiction' is 'Time Warp of Magic' which has an interesting plot where Hermione is sent back in time and meets Merlin. The way their magic interacts is really fascinating.
One possible plot could be Hermione discovers her true parentage later in her Hogwarts years. This revelation could lead to her having new magical abilities or a connection to ancient magic that she has to learn to control. It might also cause a stir in the wizarding world as Merlin is such an iconic figure.
It would change a great deal. First off, McGonagall would probably be more involved in Hermione's academic progress on a personal level. She might give her special assignments or extra tutoring. As for the other professors, they might view Hermione as having an 'inside track'. For instance, Professor Flitwick could be more lenient with her in Charms class. This new dynamic would add a whole new layer to Hermione's Hogwarts experience and how she interacts with the faculty.