The plot may involve Hermione trying to hide the physical signs of her pregnancy. She could use magic to conceal her growing belly or any other symptoms. As the story progresses, there might be some close calls where Snape almost discovers the truth. For instance, he might notice her sudden aversion to certain potions in class that are not suitable for pregnant women. This would add to the tension in the story.
In this kind of fanfiction, the plot could also develop with Hermione starting to make plans for the future without Snape's knowledge. She might be looking for a safe place to have the baby, away from the prying eyes of the Hogwarts faculty. And as the pregnancy progresses, she may start to have internal struggles about whether to finally tell Snape or keep the secret forever. This internal conflict can drive the story forward and add depth to her character.
Often, the plot develops with Hermione constantly being on edge, trying to avoid Snape as much as possible. She might start making excuses to skip classes or meetings where she knows Snape will be present. For example, she could claim to be working on an important research project alone in the library. Meanwhile, she may confide in her close friends like Harry and Ron, but make them swear to keep it a secret.
Often, it starts with the slapping incident which creates immediate conflict. Then, Hermione might be outraged and seek justice or revenge, which drives the plot forward. For example, she could go to Dumbledore about it.
She could be using magic. For example, she might use a concealment charm on herself to hide any physical signs of pregnancy. Hermione is very skilled in magic, so she could easily cast spells that make her look the same as before. She might also avoid situations where she would be in close contact with Draco. By staying away from him as much as possible, she reduces the chances of him noticing any changes in her.
Hermione could be hiding her pregnancy from Snape because she's not sure of his feelings towards her. There may be an ambiguous relationship between them. She might be in love with him, but not sure if he feels the same. And she doesn't want to burden him or make things awkward between them. Or perhaps she suspects that Snape might be involved in something dangerous, and she doesn't want her unborn child to be dragged into it.
In the 'Hermione Caught Cheating Fanfiction', the development of other characters depends on their relationship with Hermione. Her fellow Gryffindors might be divided. Some would support her without question, while others might be swayed by the evidence at first. Neville, for instance, could be one of the first to stand by her, showing his growth in courage. The Slytherins could be a mix. Some might be the ones behind the false accusations, while others might secretly admire Hermione's intelligence and be intrigued by the situation. And Hermione's own character would also develop as she has to deal with the unfair accusation and prove her worth and honesty.
Often, it starts with Hermione noticing something different about Snape. Maybe she sees a moment of vulnerability or a hidden kindness. Then, she begins to question her previous perceptions of him.
Some fanfictions develop their relationship through shared adventures outside of Hogwarts. They go on secret quests together, relying on each other's skills. Harry's courage and Hermione's intelligence complement each other during these adventures. As they face challenges and overcome them, their relationship blossoms into a romantic one while they keep it hidden from their friends.
Often, it starts with the introduction of the marriage law. Then, Hermione's reaction to it is shown. It might be shock, defiance, or immediate acceptance depending on the writer's take. For example, if she's against it, she may try to find loopholes in the law.
One possible reason could be fear. Maybe Hermione is afraid of how Draco will react. Given their history in the wizarding world, with their houses being rivals at Hogwarts and different beliefs, she might think he'll reject her or the baby. Another reason could be to protect the baby. There could be some threats or dangerous situations in the wizarding world that she believes Draco's knowledge of the pregnancy would put the baby at risk. For example, there could be dark forces that target the children of powerful witches and wizards, and she wants to keep the baby's existence a secret to safeguard it.
Hermione may also start to scheme. She'll use her intelligence to come up with a plan. For instance, she might start to collect evidence against Snape, something that she could use to counter his blackmail. She'll research old school rules or find out secrets about Snape that she can hold over his head instead.
Well, it often starts with a lot of misunderstandings. Snape has his own preconceived notions about Hermione as a Gryffindor student, and Hermione has her own view of Snape as a strict and often unfair teacher. However, as they live together, small moments start to change their relationship. For example, when Hermione is having trouble with a particularly difficult spell, Snape doesn't scold her but instead patiently guides her. This gradually builds trust between them, and they form a unique bond that is different from the typical student - teacher relationship or even a normal father - daughter relationship.