Hermione's character could develop in terms of her relationships. Through saving Fred, she might form a stronger bond with the Weasley family. She may also become more empathetic as she experiences the fear of losing someone dear. She realizes that there are things more important than just academic knowledge. So, she starts to balance her intellectual side with her emotional side more effectively.
Well, in some versions, Fred might use his quick-witted magic skills. He could cast a distraction spell to draw Bellatrix's attention away from Hermione. Maybe a spell that creates multiple illusions of himself, confusing Bellatrix long enough for him to grab Hermione and disapparate them to safety.
In the fanfiction, it could be that Ron is consumed by jealousy or a false belief. This causes him to lash out at Hermione in a way that endangers her. Fred, having a protective streak, especially towards his friends, jumps into action. He might engage Ron in a duel of sorts, not with the intention to harm but to subdue him long enough to break whatever spell or negative emotion has a hold on Ron and thus save Hermione.
She likely becomes more confident in her abilities outside of just academic knowledge. Saving Fred would require her to take risks and trust her instincts, which could make her more self - assured. For example, if she has to perform a spell she's not entirely sure about, but does it anyway to save Fred, it shows her growth in believing in herself.
A plot could involve Fred being affected by a spell that makes him slowly lose his memories. Hermione notices the signs early on and starts researching in the restricted section of the library. She finds a rare counter - spell that requires a great deal of magical power and precision. With the help of her friends, she manages to gather the necessary ingredients and perform the spell to save Fred's memories. Another idea is that Fred is in a situation where he's being influenced by a malevolent magical entity. Hermione detects it and uses her logical thinking and knowledge of magical defenses to exorcise the entity and save Fred.
One common theme is friendship exploration. Since they are not as closely paired in the original books as some other characters, fanfics often delve into how they could become better friends. For example, they might bond over a shared love of a particular subject at Hogwarts.
One great Hermione, Fred and George fanfic is 'Triple Trouble at Hogwarts'. It has a really interesting plot where Hermione teams up with Fred and George for a secret project. The character interactions are well - written, and it shows a different side of their relationships.
A good Hermione, Fred and George fanfic should have well - developed characters. Since we already know the trio from the original books, the fanfic should expand on their personalities. For example, showing how Hermione's strictness can be both a hindrance and a help to Fred and George's pranks.
One common theme is friendship. In many of these fanfics, Fred and Hermione start off as friends, and then their relationship deepens. For example, they might support each other through difficult times at Hogwarts, like during exams or when dealing with dark magic threats.
Friendship is a major theme. Fred's act of protecting Hermione showcases the deep bond of friendship between Gryffindors. It shows that they look out for each other no matter what.