One idea could be a story where Fleur tries to subtly show her feelings to Hermione through acts of kindness, like leaving her little gifts. It could start with Fleur realizing her crush when she sees Hermione's intelligence during a study session in the library.
A possible fanfiction could be set in a post - war scenario. Fleur, who has always admired Hermione from afar, decides to be more forward. She asks Hermione to go on walks with her around the Hogwarts grounds. Along the way, Fleur shares her thoughts and feelings, and Hermione is initially surprised but then open - minded to this new relationship possibility.
It could be developed by having Fleur first struggle with her feelings internally. She might be confused because it's not a common type of attraction in the wizarding world. For example, she could write in a diary about her feelings for Hermione.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfictions on various topics, including this one. Just use the search function and type in relevant keywords like 'Fleur has a crush on Hermione' and you'll likely find several stories.
One possible plotline could be Fleur struggling with her feelings. She might be in a situation where she has to interact with Hermione a lot, like during some magical events or projects at Hogwarts or in the wizarding world. And she gradually realizes that her feelings are more than just friendship.
Harry might be a bit flustered at first. He's not used to the attention from someone like Fleur. He could be shy and a bit unsure of how to handle it.
Well, if Hermione has a crush on Fleur in the fanfiction, it could make things really interesting. For example, it might create some jealousy among her friends, especially if they don't understand her feelings. Ron might be really confused and a bit put off, since he has his own complicated relationship with Hermione. Harry, on the other hand, might be more understanding but still a bit surprised. And it could also change how Hermione approaches her studies and her role in the wizarding world. She might be more distracted, or she could be inspired to be more like Fleur in some ways, like being more confident in social situations.
Perhaps in the fanfiction, Hermione has a set of tattoos that are in a magical language. Fleur, being from a different magical culture, tries to decipher them. As she does, she and Hermione grow closer, sharing their different perspectives on magic. The tattoos could be a mystery that brings them together, and as they solve it, they form a strong bond.
Well, one plotline could be that Hermione tries to impress Fleur by excelling in areas she thinks Fleur would admire. So she might study really hard in subjects like Charms or Transfiguration to show off her skills. Another could be that Hermione's friends try to play matchmaker, which could lead to all sorts of comical and awkward situations. There could also be a plotline where Fleur is initially put off by Hermione's attention, thinking it's just some strange Hogwarts behavior. But as time goes on, she starts to see Hermione's true self and her feelings begin to change. This could lead to a slow - burn romance that develops over time, with many obstacles along the way, like cultural differences between Hogwarts and Beauxbatons students.
Another possibility is that Fleur, in a bid to gain more influence in the magical world, uses Hermione's research on some ancient magic without permission. When Hermione finds out, she realizes Fleur has been using her all along, and this is the ultimate betrayal. Hermione then has to find a way to expose Fleur's actions and clear her own name.
One plot idea could be that Lavender tries to subtly show her feelings to Hermione through small acts of kindness, like leaving her favorite books in the common room. Another could be that Lavender gets jealous when Hermione spends time with Ron and she has to deal with those complex emotions in a magical way. Maybe she accidentally casts a spell that makes Hermione see how much Lavender cares.
I'm not aware of such a specific fanfiction. Fanfiction can cover a wide range of themes and scenarios, but this one seems rather unusual and perhaps not in line with the general spirit of the original works. However, the world of fanfiction is vast, and there could potentially be something out there that I haven't come across.