In fanfiction, the Time - Turner can be a tool to bring Hermione and Snape closer. For example, if Hermione uses it to help Snape with a past event, he may start to trust her more. This newfound trust can change their relationship from one of animosity in the original story to a more collaborative and understanding one. They might share secrets and knowledge that they wouldn't have otherwise.
In fanfiction, the Time - Turner can create scenarios where Hermione and Bellatrix are forced to interact in ways they normally wouldn't. For instance, if Hermione uses the Time - Turner to go back to a time when Bellatrix was younger, she might try to influence Bellatrix's path and turn her away from the dark side. This would be a difficult task as Bellatrix is already deeply influenced by the Dark Arts. But the Time - Turner gives Hermione the opportunity to at least attempt it, which would greatly impact their relationship, whether it be one of enmity or a strange sort of begrudging respect.
Their relationship would likely start off with a lot of tension. Snape is used to being distrustful of Gryffindors, and Hermione is not one to take Snape's snide remarks lightly. However, as they are forced to interact more due to the Time - Turner situation, they might gradually develop a mutual respect. Hermione would come to understand Snape's complex past, and Snape would see Hermione's intelligence and determination.
In some fanfictions, the use of the Time Turner causes some tension in their relationship at first. Maybe Hermione is worried about the consequences of misusing it, while Harry is more eager to take risks. But as they go through different time - traveling scenarios, they learn to balance each other out and their relationship becomes stronger. They start to understand each other's perspectives better and this helps them communicate more effectively in other aspects of their lives too.
Snape would have more opportunities to right his wrongs. For example, he could go back and be more honest with Lily about his feelings. His character could become less bitter as he gets a chance to change things that made him so resentful in the first place.
Hermione got a Time - Turner in the Harry Potter series. It was a very special device that allowed her to go back in time. This was crucial for her to attend more classes than were physically possible at once. For example, she was able to take both Muggle Studies and Ancient Runes at the same time slot. It also played a significant role in some of the adventures she had with Harry and Ron, like saving Sirius Black and Buckbeak. The Time - Turner was a magical yet dangerous object, as misusing time - traveling magic could have disastrous consequences, but Hermione managed it quite well most of the time.
Their relationship might start off very rocky. Severus would be distrustful of Hermione as she is a Gryffindor and he has his own prejudices. But as they are forced to rely on each other because of the Time - Turner situation, they start to see each other's strengths. For example, Hermione's intelligence and quick thinking, and Severus' knowledge of magic and his ability to be cunning in difficult situations.
One plot could be Hermione using the Time - Turner to go back and change Snape's perception of her. Maybe she tries to show him that Gryffindors can be worthy allies. Another could be that Snape discovers Hermione's use of the Time - Turner in a way that wasn't in the original books and they end up working together secretly to stop a new dark threat.
Another plotline might involve Snape discovering Hermione's use of the Time - Turner and initially being suspicious of her motives. But as they interact more in the altered timeline, they end up forming an unlikely alliance. They could work together to uncover a long - buried secret about Hogwarts that was lost in time.
One great 'Time Turner Hermione' fanfiction is 'Hermione's Time - Turner Adventure'. It delves into Hermione using the Time Turner for more than just attending classes. The story is full of mystery and her character development is really interesting as she faces new challenges.
In some fanfics about Hermione and the Time Turner, it's often used as a plot device to fix mistakes. Maybe she goes back in time to prevent certain events from happening that had negative consequences in the original timeline. This can create a lot of interesting alternate storylines. For instance, she could stop the basilisk from being set loose too early, or she could change how she first met Harry and Ron, leading to different relationships and character developments.