This concept might be a means of exploring the concept of forbidden love. Bellatrix is a Death Eater and Hermione is a Muggle - born witch fighting against the Death Eaters. Their relationship in this context would be highly taboo. The suit on Hermione could enhance her as an object of desire for Bellatrix, making the forbidden aspect even more intense.
In fanfiction, this scenario might be used to show the blurred lines between good and evil. Bellatrix's love for Hermione in a suit could be a way to break the traditional molds of the characters. It could also be a form of character development for Bellatrix, showing that she is capable of feelings other than hatred and loyalty to Voldemort. The suit on Hermione could add an element of professionalism or allure that catches Bellatrix's eye.
One possible plot could be that Bellatrix captures Hermione and tries to torture her for information about Harry. But Hermione, using her wits and some new-found powerful magic she has been secretly studying, manages to turn the tables and kill Bellatrix in self - defense.
It could entail a story where the baby has extraordinary magical abilities due to the unique combination of Hermione's natural talent and Bellatrix's dark magic knowledge. For example, the baby might be able to perform spells that are a blend of light and dark magic.
Perhaps in this fanfiction, the Time - Turner malfunctions while Hermione is in the middle of a confrontation with Bellatrix. This could send them both to a different time period, maybe even one where the wizarding world is in a completely different state. They would have to find a way to work together, at least temporarily, to get back to their own time. Hermione would be reluctant to trust Bellatrix, but she might not have a choice. And Bellatrix would be both intrigued and suspicious of Hermione.
One possible motive could be Bellatrix's loyalty to Voldemort. She might think that by kidnapping Hermione, she can get information about Harry Potter and the Order of the Phoenix. Hermione is known to be very intelligent and Bellatrix could believe she has valuable knowledge. For example, Hermione might know the location of Potter or the Order's plans against Voldemort.
A fanfiction could have Bellatrix cursed with a spell that makes her see Hermione as her long - lost sister. Harry is initially very confused by this development. Hermione, being the kind - hearted person she is, tries to use this situation to reform Bellatrix. She teaches Bellatrix about love and friendship, and Harry gradually comes to support Hermione's efforts.
In Hermione and Bellatrix fanfiction, the power dynamic is often an interesting point. Bellatrix has a great deal of power as a Death Eater, but Hermione has her own kind of power in her knowledge and magic skills. Some fanfictions may show a battle of wills between them, where Hermione refuses to be intimidated by Bellatrix's threats. This can lead to some really intense and exciting storylines, like when Hermione stands up to Bellatrix in a duel - like situation in a magically - created arena within the fanfic's plot.
One possible aspect of Hermione and Bellatrix fanfiction could be the exploration of their opposing natures. Hermione is a studious, rule - following Gryffindor, while Bellatrix is a wild and chaotic Death Eater. Fanfiction might play with the idea of how they interact in different scenarios. For example, in a scenario where Hermione is captured by Bellatrix, their exchanges could be filled with tension and power plays. Hermione's intelligence could be pitted against Bellatrix's brute force and loyalty to Voldemort.
Yes, there are likely fanfictions out there with such a plot. The 'Harry Potter' fandom is vast and diverse, and some fanfiction authors explore dark and alternate storylines. However, these often deviate from the original positive and heroic themes of the series.
One reason could be pure hatred. Bellatrix despises Muggle - borns, and Hermione being a very intelligent and powerful Muggle - born would be a prime target for her wrath. Another could be jealousy. Hermione's skills and knowledge might make Bellatrix feel inferior, leading her to lash out.