One plotline could be that Voldemort's attempt to make Hermione have a baby is part of a larger plan to create a new kind of dark magic being. Hermione, being the brilliant witch she is, manages to resist the initial dark magic influence. She then uses her intelligence to study the dark magic involved and finds a way to turn it against Voldemort. Another plotline might be that the whole scenario is a test by some ancient magical force to see if Hermione can overcome this extreme form of dark magic. And a third could be that Voldemort wants to use the baby (in the fanfiction) as a hostage to make Harry give up in the fight against him, but Hermione figures out a way to protect the baby (even if it's just an illusion) and still help Harry in the war.
Well, one possible plotline could be that it's all a dark magic illusion created by Voldemort to torture Hermione psychologically. In this case, Hermione has to fight against this false reality in her mind while her friends try to break the spell. Another could be that Voldemort uses some ancient and dark magic that forces Hermione into a situation where she has to protect an innocent life (the baby in the illusion) which in turn makes her discover new powers or magical abilities within herself. And a third plotline might be that it's a time - travel - related situation where Voldemort from a different timeline tries to change the future by this act, but Hermione, with the help of her knowledge of time - turners and magic, finds a way to reverse it.
Well, it could be that Voldemort gives Hermione to Dolohov to try and break the morale of the resistance. However, Hermione uses this as an opportunity to gather intelligence on the Death Eaters. She might pretend to cooperate with Dolohov at first while secretly sending messages to the good side. And later, when the time is right, she could use the knowledge she gained to help defeat Voldemort and his followers.
Well, a plotline could involve Hermione having hidden powers that are related to her being Voldemort's daughter. Maybe she has an ability to control dark magic in a way that no one else can. She could also be hunted by both the good and the bad sides. The good side might fear that she will turn evil like her father, and the bad side might see her as a threat to their power. Additionally, there could be a plotline where Hermione tries to redeem Voldemort through her connection to him, believing that there is some good in him after all.
In the realm of fanfiction, the ethics can be a bit murky. Writing about such a scenario as 'Voldemort makes Hermione have a baby' can be ethical if it is done in a way that respects the original source material and the values it represents. For instance, if it is used to show the horror of Voldemort's actions and Hermione's strength in the face of such evil. But if it involves vulgarity, excessive violence, or goes against the core values of the Harry Potter series like love, friendship, and the fight against evil in an inappropriate way, then it is unethical.
Another plotline might be their family life. They could be shown starting a family early, and dealing with the joys and challenges of raising children in the wizarding world. For example, teaching their kids magic at home, or dealing with the chaos of a family full of young wizards.
One plotline could be the secrecy around the baby. Since Sirius was on the run for a long time, they might have to keep the baby's existence a secret from the Ministry. Hermione would use her intelligence to create protective spells and hiding places. Another could be the baby showing extraordinary magical abilities early on, which attracts unwanted attention from dark forces.
One possible plotline could be that Voldemort gives Hermione to Draco as a way to test Draco's loyalty. Draco, who has his own complex feelings towards Hermione, might initially be conflicted. He could be ordered to torture her for information, but instead, he tries to protect her in secret. This could lead to a series of events where they form an unlikely alliance against Voldemort.
There could also be a plot where the baby is from another dimension or time. Harry and Hermione have to figure out how to send the baby back while also dealing with the chaos the baby's presence causes in their own time and world. They might have to team up with other characters like Ron or Dumbledore to solve this complex problem.
Often, in these fanfictions, Hermione is used as a tool to understand Voldemort better. There might be a plot where she is forced to enter his mind, like in a Legilimency - related situation. This could create a connection between them that the fanfiction then explores. Another common plot is that Hermione's magic has some sort of resonance with Voldemort's, which draws them together in a relationship that is both dangerous and full of potential for new storylines.
Well, a plotline could involve Hermione exploring her dark magic abilities. Since she's Voldemort's daughter, she may have a natural inclination towards certain dark spells and powers. This could put her in a difficult position as she has to hide it from her friends at first. Maybe she starts to have strange dreams or visions related to her father's past and his plans. Also, the story could focus on how she uses her intelligence, which was always her strong point, to either embrace or fight against her dark heritage. For instance, she could use her knowledge of magic to find a way to break the connection to Voldemort if she wants to be on the good side, or she could use it to further his dark plans if she succumbs to her new identity.
One possible plotline could be a character being in a situation where they are pressured by family or society to have a baby. For example, in a historical setting, a young woman might be forced into an arranged marriage and expected to produce an heir right away. Another could be a character in a dystopian world where the government mandates reproduction for some reason. Maybe they are part of a group that is being used for genetic experiments and forced to bear children against their will.