I'm not sure if there is such a specific fanfiction. It's a rather unusual and probably not very common concept within the fanfiction world. The general fanfiction often focuses on more mainstream relationships and storylines in the Harry Potter universe.
Fanfiction can cover a wide range of ideas, some of which are very creative and some are more controversial. The idea of Bellatrix breastfeeding baby Harry seems rather strange and not in line with the general tone and relationships established in the original series. It's possible that some very avant - garde fanfic writers might have attempted it, but it's not likely to be a popular or widely known type of fanfiction.
In the official Harry Potter canon, Bellatrix is a Death Eater and has a very antagonistic relationship with Harry. So, a fanfiction with this concept would be quite out - of - the - box. However, the world of fanfiction is vast and diverse, and there might be some extremely niche or experimental pieces out there that could potentially explore such an idea, but I haven't personally come across it.
If such a fanfiction exists, it would likely be a very radical re - imagining of the characters. Bellatrix is a villain in the original, and this would completely change her role in a very unexpected way. It might also change the way readers view Harry's early life and the nature of the relationship between the two characters.
Maybe she wants to humiliate him. By treating him like a baby, she can make him seem weak and powerless.
Well, it's possible that there could be some out there. However, this is a rather unusual concept. It might not be a common theme in the general Arcee and Jack related fanfiction. You'd have to dig deep into the various fanfiction communities and use specific search terms to find out.
There are fanfictions where Harry gets captured by Bellatrix and Narcissa is caught in the middle. She has to decide whether to side with her sister or help Harry. This creates a really tense and interesting plot. For example, in some stories, Narcissa's maternal instincts towards Draco play a role in how she treats Harry.
A popular 'Dark Harry and Bellatrix' fanfiction is 'The Dark Convergence'. This story starts with Harry being disillusioned with the light side and gradually being drawn to Bellatrix's brand of dark magic. Their alliance is shaky at first but then grows stronger as they face common enemies. The fic is really good at exploring the moral gray areas that both characters inhabit when they step into the dark.
In fanfiction, the idea of Hermione and Bellatrix having a baby is a very unique and often dark concept. It might explore how the two very different characters' traits could be combined in a child. Maybe the baby would inherit Hermione's intelligence and Bellatrix's fierce determination in some strange way. However, this is all in the realm of creative fanfiction and not part of the original canon.
One way could be through a time - travel or alternate reality plot device. Maybe in a world where dark and light magic collide in unexpected ways, Harry and Bellatrix are forced to work together and somehow, against all odds, a connection forms that leads to a child. It would be a very complex relationship, full of inner turmoil for both characters.
Well, it could add a really strange and unexpected dynamic to the plot. It might make the story more about Bellatrix's warped sense of power and control. Maybe she's using this 'baby - like' treatment to manipulate Harry in some way, like trying to break his spirit more easily by infantilizing him.
There may or may not be such a fanfiction. It's not something you would typically expect in the world of fanfiction related to the Harry Potter series. Fanfiction writers usually draw inspiration from the existing characters, magic, and storylines to create more believable and engaging stories. This concept seems so far - fetched that it's less likely to be a widespread or well - known piece of fanfiction.
Yes, there might be some fanfictions that handle the concept in a family - friendly and appropriate way. For example, it could focus on the nurturing aspect of Hermione as a mother in a very innocent and non - sexualized manner, perhaps in a story about the challenges and joys of early motherhood for her character.