Perhaps they form an unlikely friendship. Snape, having finally been vindicated post - war, is a broken man. Hermione, seeing his pain, reaches out to him. She might help him come to terms with his past actions and the losses he has endured. They could bond over their shared love for Hogwarts and their experiences during the war.
One possibility is that Hermione, with her intelligence and thirst for knowledge, might seek out Snape after the war to learn more about the Dark Arts defenses he knew so well. Maybe she wants to ensure that Hogwarts is never again vulnerable to such dark forces. Snape, initially reluctant, could be won over by Hermione's determination and respect for his skills.
It could be that Hermione discovers some of Snape's hidden secrets and research. Snape was a brilliant potions master and had knowledge of many dark and ancient magic. Hermione, being the inquisitive witch she is, might stumble upon something that changes her perspective of Snape completely. And together they could use that knowledge for the good of the wizarding world.
Well, one possibility is that they could have an intense conversation. Maybe Hermione discovers a side of Snape she never knew. For example, Snape could reveal some of his past traumas or secrets that make Hermione see him in a new light. It could be a moment of mutual understanding between two characters who didn't get along well in the original story.
Well, Snape could force Hermione to participate in a wizarding duel against her will. In fanfiction, this could be a way for Snape to test her skills or perhaps punish her for something he believes she has done wrong. Hermione would be in a tough situation as she is a rule - abiding student, but being forced into a duel would make her have to think on her feet and use her magic in new and unexpected ways.
In this fanfiction setting, Snape might be at Grimmauld Place on some secret mission. Hermione, being the inquisitive witch she is, could stumble upon him. There could be a tense moment at first, but then they realize they need to cooperate. Snape could teach Hermione some advanced magic that she wouldn't learn at Hogwarts, and in return, Hermione could offer her unique perspective on the wizarding world. Their relationship could develop into an unlikely alliance, which would be really exciting to read about.
Well, it could be that under the mistletoe, Hermione breaks through Snape's tough exterior. She might see a side of him that no one else has seen before. Maybe they share a magical moment, like a spell that only they can create together, which symbolizes a new connection between them.
There could be a plot where they are forced to work together on a project. Snape initially resents it, but as they collaborate, he sees Hermione's determination and begins to fall for her. However, he has to deal with the fact that she is a Gryffindor and he has his own reputation to uphold. This creates a lot of drama and tension in the story.
They could start off on bad terms, with Snape being his usual strict self and Hermione being defiant. But as the detention progresses, they might find common ground. For example, Snape could notice Hermione's talent for potions and start to give her some extra knowledge or tasks related to advanced potions. This could change their relationship from one of animosity to one of a grudging teacher - student respect.
Well, it might result in a confrontation. Snape has his own secrets and motives, and Hermione is not one to back down easily. If she's in the dungeon without permission, Snape could be quite harsh with her. However, some fanfictions take this in a different direction. Maybe Hermione discovers something about Snape's past while in the dungeon, and this knowledge makes Snape more vulnerable in front of her. It could be a turning point where their relationship goes from antagonistic to something more complex and nuanced.
In the fanfiction, Hermione spending time with Snape might also involve her trying to understand his past better. She could be the one person who finally gets him to open up about his relationship with Lily Potter. This could create an unexpected bond between them, as Hermione realizes that Snape is more complex and tragic than she initially thought.
In such a fanfiction, perhaps Snape catches Hermione breaking a minor school rule like sneaking into the restricted section of the library. He might give her a stern warning or a detention as a result.
One possibility is that Snape initially refuses to help Hermione. He has his own grudges and is often portrayed as a cold character. But as the story progresses, he might see something in Hermione's situation that relates to his own past or values, and reluctantly start to offer some guidance.