Well, it could be about Hermione somehow getting involved with the Quileute culture. Maybe she travels to their territory and learns about their traditions, magic, and way of life. It could also involve her forming relationships with the Quileute characters, perhaps even falling in love with one of them.
In a 'Hermione is a Quileute' fanfiction, the plot could be really interesting. Imagine Hermione discovers a hidden connection between her own magic and the Quileute's. She then embarks on a journey to explore this connection further. Along the way, she has to deal with the differences in their magical practices. There could be conflict from within the Quileute tribe as well, some members might be suspicious of her while others see her as an opportunity for growth and change. She might also have to face some sort of threat that endangers both her and the Quileute, and she uses her wits and magic to save the day.
I'm not sure specifically if there is a fanfiction titled 'Hermione is a Quileute'. You could try searching on major fanfiction websites like Archive of Our Own or FanFiction.net. These platforms have a vast collection of fanfictions, and you can use the search bar to look for it by typing in the exact title or related keywords.
It could lead to a whole new dynamic in the story. Maybe she'd have stronger ties to the Quileute tribe and their powers.
One possible plot could be that Hermione, as a Lycan, struggles to hide her identity within the Hogwarts community. Fleur, being perceptive, might notice something off about Hermione. Maybe Hermione is afraid of being discovered and ostracized, while Fleur, having her own experiences with being different (as a Veela), tries to help Hermione come to terms with her new lycanthropy. They could form a strong bond as they both deal with the challenges of being 'other' in the wizarding world.
One possible plot could be Hermione using her Goth style to rebel against the traditional Hogwarts norms. She might start a club for those interested in the Goth subculture within the school.
One possible plot could be that Hermione is turned into a pixie by a spell gone wrong. She then has to figure out how to reverse the spell while dealing with the challenges of being a pixie, like learning to control her new flying abilities and small size.
One possible plot could be that Hermione, being a brilliant witch, discovers a magical portal that leads her to the world of Arendelle. There, she meets Elsa and is immediately intrigued by Elsa's ice powers. She decides to study them from a magical perspective. Along the way, they become friends and Hermione helps Elsa better understand and control her powers using her knowledge of magic and spells.
Well, in fanfiction, 'bella is half quileute' might deal with the implications of her mixed heritage within the context of the original story's world. For example, it could involve how she fits into the Quileute tribe's traditions and how it affects her relationships with the other characters like the werewolves. It could also explore how this new aspect of her identity changes the overall narrative of the story we know from the original work.
Maybe the story is about Hermione being adopted into a Muggle family in England. She would have to hide her magical abilities while also trying to find a way to reconnect with the wizarding world. It could be a tale of her struggle to balance her two lives, and perhaps she meets other magical beings in secret who help her keep her identity hidden and guide her on how to get back to the wizarding world when the time is right.
She could have been kidnapped by dark wizards who want to use her intelligence for their evil plans.
One possible plot could be a story set during a Triwizard Tournament - related event. Maybe Fleur and Hermione are forced to work together in a dangerous task and during a moment of panic or urgency, Fleur straddles Hermione to protect her from some sort of threat. And from there, a new bond forms between them.