One possible scenario could be that Snape, now redeemed in the eyes of many after the truth about his actions during the war is known, might offer a simple apology to Hermione for any past harshness. He could be in a state of self - discovery and seeking to make amends with those he wronged in his guise as a Death Eater supporter. Hermione, being the empathetic person she is, might accept it graciously and they could have a brief conversation about the new world order post - war.
Pre - war, Snape saw Hermione mainly as just another Gryffindor student, and she saw him as a rather intimidating and unfair professor. After the war, when they bump into each other, things could be different. Snape, now having his true loyalties revealed, might approach Hermione with a sense of guilt for his past behavior. Hermione, being the forgiving type, could start to view Snape as a complex figure who made great sacrifices. Their relationship could develop into one where they exchange stories of their wartime experiences, with Hermione learning more about Snape's double life and Snape getting to know Hermione's role in the resistance better.
There could be a scenario where Snape is initially hesitant to interact with Hermione. But she is persistent. She tries to understand his past and his pain. As she breaks through his walls, they start to have a more open and honest communication. They might exchange stories about their time at Hogwarts during different eras, and Snape could finally have someone who truly understands him, at least to some extent, in Hermione.
One popular theme is redemption. Snape was a complex character, and in post - war fanfictions, his relationship with Hermione could explore his journey towards full redemption. Another theme could be the mending of the wizarding world. Hermione, with her intelligence and Snape's deep knowledge of the Dark Arts, could work together to heal the scars of the war. Also, there might be a theme of unexpected friendship or more. Given their differences in the original story, seeing them interact in a post - war setting can lead to some very interesting character - driven stories.
In some fanfictions, Snape might be seen as a mentor figure to Hermione after the war. Since he sacrificed so much and she respects knowledge, he could guide her further in advanced potions or dark arts defense knowledge.
Writers often start with a lot of tension. Given their history, Hermione might be initially distrustful of Snape. For example, she could be hesitant to work with him on any post - war projects. But then, as they interact more, they start to see each other's good qualities. Maybe Snape shows his softer side, like his love for the students he secretly protected. And Hermione's intelligence and determination might earn Snape's respect.
One possibility is that Hermione might initially be shocked and angry. Snape was not always kind to her during school, but now she realizes his true role in the war. She could confront him about his past behavior, yet also express gratitude for his sacrifices. For example, she might say something like 'I can't believe all you did, even after how you treated us at times.'
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.
Another pairing is Hermione and Draco. This is a more unexpected and often interesting pairing. In some fanfictions, they put aside their differences from the war and start to see each other in a new light, and they might work together on some post - war projects for the betterment of the wizarding world.