It could be that the dream is a premonition of some sort. Severus and Hermione start to notice similarities between the events in the dream and things that are starting to happen in the real world. They then try to use the knowledge from the dream to prevent a disaster from occurring. This would involve them relying on each other's skills and knowledge, and growing closer as a result.
Maybe the 'unspeakable' is an ancient magic that only works within dreams. Severus and Hermione accidentally trigger this magic and are plunged into a dream where they are faced with challenges that test their loyalty, courage, and friendship. As they progress through the dream, they learn more about themselves and each other, and by the end, they have a new - found respect for one another.
One possible scenario could be that in this fanfiction, Severus and Hermione meet in a dream world created by some sort of magic gone awry. Maybe it's a place where they can communicate freely without the constraints of their normal Hogwarts relationships. For example, Severus could be more open about his past and Hermione could gain a new understanding of him.
Maybe in a time - travel fanfiction. Hermione travels back in time and ends up in Snape's student days. She tries to change some events for the better, and in the process, she gets to know a younger Snape. Their interactions are initially rocky but gradually turn into something more, leading to a kiss. This would be a very different take on their relationship, as it involves a different time period and different versions of themselves.
Well, perhaps the phoenix is actually a guardian of a powerful magic that only Hermione and Severus can unlock together. But there's a catch. They have to overcome their initial distrust and dislike for each other. This would lead to a lot of tense and interesting scenes as they try to figure out how to work together without killing each other first.
One possible plot could be that Hermione, in her intelligent and empathetic way, sees the pain and complexity within Severus. She gradually breaks through his cold exterior. For example, in a Hogwarts setting post - war, Hermione might be researching some dark magic remnants and Severus, with his in - depth knowledge, becomes an unexpected ally. Their relationship could start as a mutual respect for each other's minds and then develop into a deeper, more romantic love as they spend more time together, defying the expectations of the wizarding community.
Perhaps the baby's existence causes a rift in the wizarding world. Some might view it as an abomination due to the age and past relationship between Hermione and Severus. This could lead to Hermione and Severus having to fight not only for their baby's safety but also for their right to be a family in a world full of prejudice.
One possible plot twist could be that the baby has some unique magical abilities that neither Severus nor Hermione expected. Maybe the baby can communicate with magical creatures in a way no one has seen before. This could lead to all kinds of adventures as they try to understand and control this new ability.
Maybe Draco discovers that Severus is being framed for a crime he didn't commit. He then approaches Hermione for help as she is known for her intelligence and problem - solving skills. Together, they start to gather evidence to clear Severus's name and also protect him from those who want to harm him.
One possible plot could be that Hermione, as the daughter of Severus and Lucius, is caught between two very different worlds. Severus might want to instill in her a love for potions and knowledge, while Lucius would be more focused on the family's pure - blood status and power. Hermione could struggle to find her own identity, trying to combine her love for learning like Severus with the social expectations from Lucius' side. She might also face challenges at Hogwarts due to her unique parentage, with some students being suspicious or jealous.
One possible plot twist could be that at first, Hermione and Severus despise each other due to their past differences. For example, Severus has always been rather cold towards Gryffindors, and Hermione is a proud Gryffindor. But as they are forced to spend time together because of the arranged marriage, they start to discover each other's hidden depths. Hermione might find Severus's intelligence and his complex past with Lily fascinating. And Severus could come to respect Hermione's quick wit and thirst for knowledge. Another plot twist could be that there is some external force trying to break up the arranged marriage. Maybe some dark wizards see it as a threat to their plans, or there are those in the wizarding world who oppose the union of a Muggle - born like Hermione and a former Death Eater like Severus.
I'm not sure if there is such a specific fanfiction. However, in the general context of Hermione and Severus fanfiction, their relationship is often complex. In some fanfictions, they might develop an unexpected bond through shared intellectual pursuits or mutual understanding of the wizarding world's deeper secrets.