I'm not aware of its popularity. There are countless fanfictions out there, and without specific data on views, reviews, or community discussions, it's hard to say if it's popular.
It's difficult to determine its popularity. Fanfiction popularity can be very niche - based. If it's part of a small, dedicated fan community that focuses on a particular aspect of the source material related to Fleur and Hermione, it could be popular within that group. But in the broader fanfiction world, it may not be widely known without more information.
Since it's a fanfiction, the context could vary greatly. Maybe in the story, Fleur restrains Hermione to the bed as part of a rescue mission gone wrong. They might be in a dangerous situation where Fleur thinks restraining Hermione is for her own safety, like if they are in a place full of dark magic and Fleur doesn't want Hermione to accidentally trigger something. However, without reading the fanfiction, it's all speculation.
She would probably be very angry. Hermione is known for her strong will and intelligence. Being restrained against her will would likely make her furious and she'd start shouting at Fleur, demanding an explanation.
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.
She might have been shocked. Hermione is usually a composed character, but such an unexpected physical action from Fleur could have caught her off - guard, leaving her momentarily stunned.
One possibility could be a situation where Fleur is under the influence of a dark spell. Maybe she's been hexed to do this to Hermione. In the fanfiction world, this could be a lead - up to a rescue mission by Harry and Ron. They would have to figure out how to break the spell on Fleur and free Hermione.
It could be a case of miscommunication. Fleur misinterprets something Hermione said or did, and in a fit of rage or confusion, she ties Hermione to the bed. As the story progresses, they clear up the misunderstanding and end up becoming friends or allies.
Romance can also be a theme in some Hermione and Fleur fanfictions, although not all. Some writers like to explore a romantic relationship between them, showing how their relationship might develop from initial attraction to a deeper emotional connection. However, many fanfictions focus more on their platonic relationship and how they support each other in the wizarding world.
Maybe Fleur was just being playful. In some fanfictions, characters might have these sorts of physical interactions as a form of friendly teasing or a quick, impulsive action without any real harm intended.
One possible plot could be that there is some sort of misunderstanding. Fleur believes Hermione is in danger from some dark magic or a dangerous creature and ties her to the bed to keep her safe. As the story unfolds, they realize the miscommunication and work together to solve the real issue at hand. However, this is a rather strange starting point for a plot and would need a lot of careful development to make it a believable and engaging fanfiction.
Some storylines focus on the relationship between Hermione and Fleur's partners. Maybe their partners are away on a dangerous mission, and they have to rely on each other more. Or perhaps there are some misunderstandings between the partners that the two pregnant women have to sort out. In addition, there could be a plot where they discover new magical abilities related to their pregnancies, like being able to communicate with their unborn children on a magical level.