It could be that in the fanfiction world, Hermione was the victim of a spell gone wrong. This spell could have made her pregnant and also somehow cut her off from her usual support system, leaving her alone. Or perhaps she made a choice to distance herself from others because she didn't want to endanger them while she was dealing with this unexpected pregnancy.
One possibility is that in the fanfiction, she might be in a situation where she has cut herself off from her friends for some noble reason. Maybe she wants to protect them from some dark magic that she believes will target her during childbirth. Another reason could be that she's on a secret mission and has no choice but to be alone when she gives birth.
One way this could happen in fanfiction is if there was some form of time - travel involved. Maybe Hermione traveled back in time and ended up in a situation where she and Severus had a relationship that led to her pregnancy. Another possibility is that a magical artifact forced them into a situation where they had to be together closely, and feelings developed over time, resulting in a pregnancy. Fanfiction writers love to take unexpected turns with characters' relationships.
In this fanfiction, the pregnancy could be a result of a magical accident. Hermione and Blaise are working on a powerful spell, and something goes wrong. Now they have to deal with the consequences. Hermione might be scared but also determined to face it. Blaise would need to step up and support her. They might have to go on a journey to find a way to reverse the spell if they don't want the pregnancy, or they could accept it and start building a family. Along the way, they would face many obstacles, like other wizards who might want to use the situation for their own gain.
Perhaps Hermione discovers a new form of magic during her pregnancy. Since she is so brilliant, this new magic could be related to protecting the unborn child. And Antonin could be the one who encourages her to explore this new magic, which in turn deepens their relationship.
Well, perhaps the werewolf is attracted to Hermione for some special reason. Maybe it's her magical power or her kind heart. In the fanfiction, it could lead to a series of dangerous situations for Hermione, like she has to constantly be on guard against the werewolf's unexpected approaches.
One common plot is the mystery of the father. In many such fanfictions, the identity of the baby's father is not immediately clear. This adds an element of suspense and intrigue. For instance, it could be a character who has been secretly in love with Hermione or someone she had a one - time encounter with.
In fanfic, the idea of Draco and Hermione being pregnant could stem from the exploration of redemption arcs. Draco, who was initially a bully and on the wrong side, might be going through a process of change. Hermione, with her kind heart, could be the one to see this change in him. Their relationship might develop slowly as they start to understand each other better. As they grow closer, the pregnancy could be a way to show the extreme consequences of their relationship in the fanfic world, as well as a symbol of a new beginning that combines the two formerly opposed sides.
There could be a situation where Draco has a change of heart later. Maybe he realizes his mistake after some time away and tries to come back into Hermione's life. This could lead to a very emotional and complex reunion, with Hermione having to decide whether to forgive him or not.
They might start by arguing as they have different personalities and beliefs from their time at Hogwarts. But then, they could gradually discover new sides of each other. Maybe Draco would share his insecurities about his family's reputation, and Hermione would listen with empathy.
One possibility is that Hermione would have to deal with the physical changes of her pregnancy while also hiding it from some who might not understand or accept it. The werewolf pups could have unique magical abilities that are a combination of Hermione's intelligence and the werewolf's strength. This could lead to all sorts of adventures as she tries to protect them.