One interesting plot development in 'fred proposes to hermione fanfiction' could be that the two start a secret relationship after the proposal. They keep it from their friends and family for a while because they know it will be controversial. As they navigate this secrecy, they discover new things about each other. Hermione might introduce Fred to some more academic aspects of magic, and Fred could show Hermione a more fun - loving and adventurous side of the wizarding world. Eventually, they decide to come out with their relationship, which causes a stir but also a lot of acceptance in the end.
In a 'fred proposes to hermione fanfiction', a possible plot development might be that Fred's proposal is part of a grand scheme to save Hermione from some danger. Maybe there's a dark wizard after her, and by proposing, Fred can offer her some form of magical protection. Or perhaps, the proposal causes a rift in the Weasley family as some don't approve of the pairing. This could lead to Fred having to fight for their relationship against his own family's wishes while also trying to win Hermione's heart completely.
Well, one plot development could be that Hermione is initially shocked but then realizes she has feelings for Fred too. They then have to deal with the reactions of their friends, like Ron being a bit miffed at first. Another could be that Hermione rejects Fred's proposal at first, but as the story progresses, she sees how much he truly loves her and changes her mind.
I'm not sure of a specific 'fred proposes to hermione fanfiction' off the top of my head. However, you could try checking out Archive of Our Own (AO3). They have a vast collection of fanfictions, and if you use their search filters and type in 'fred proposes to hermione', you might find some great reads. It's interesting to see how different authors explore this rather unexpected pairing in the Harry Potter universe.
Another development might be the reaction of their friends. Harry and Ron might be initially skeptical or even opposed to this situation. There could be a lot of tension within the group as they try to come to terms with what it means for Hermione to be claimed by Remus. It could also lead to some rifts in their friendships at first.
The plot could involve the mistletoe having some sort of magical effect. Maybe it makes Snape and Hermione relive certain memories. As they do, they start to understand each other better. For instance, they might see how they both overcame difficulties in their pasts, and this new understanding could bring them closer together.
Another possibility is that her growth spurt could lead to some comical situations. Maybe she can't fit into her old robes anymore and has to constantly adjust them during classes, which becomes a running joke among her friends. Also, it could affect her Quidditch skills if she decides to play. A taller Hermione might have an advantage in reaching for the Snitch or blocking opponents.
One possible plot development could be that Sirius becomes a sort of protector for Hermione. He might use his knowledge of the wizarding world and his own skills to keep her safe from various threats. For example, if there are dark wizards after Hermione due to her intelligence or her connection to Harry, Sirius could step in and fend them off.
Well, perhaps Hermione decides to keep the pregnancy a secret from most people at first. She might focus on her studies or her work in the wizarding community while trying to figure out how to provide for the baby. Meanwhile, Draco could be off living his own life, but then something might happen that makes him realize his mistake, like seeing Hermione and the baby by chance and feeling remorse.
One possible plot development could be that Snape's claim over Hermione creates a great deal of conflict within the wizarding world. The Order of the Phoenix might see it as a threat or a strange alliance. Hermione herself could initially resist but then start to understand Snape's motives, which could be related to protecting her from a greater danger.
One possible plot development could be that Hermione is left with a deep sense of guilt and responsibility. She might then take on Harry's mission or cause in his memory. For example, if they were fighting against a new dark wizard, Hermione could become even more determined to defeat the enemy.
One possible plot development could be that Dark Harry has some ulterior motive for kidnapping Hermione. Maybe he wants to use her knowledge to further his dark plans. For example, Hermione is known for her intelligence and vast knowledge of magic, and Dark Harry might force her to help him find a powerful and dark magical artifact.
It could also be that Hermione, after being abandoned, decides to leave Hogwarts for a while. She travels to different magical places, perhaps some ancient wizarding libraries or hidden magical communities. There, she meets Draco Malfoy who is also on some sort of self - discovery journey. At first, they are both hesitant around each other, but as they share their experiences and knowledge, they start to form a bond.