Adult fanfiction often goes against the intended spirit of the original works and can also involve violating the rights of the original creators. Instead, you could try to find general fanfictions about Harry and Petunia that are rated for a general audience. These might show interesting scenarios like Petunia having a change of heart and helping Harry in some way within the boundaries of a family - friendly story.
It could be about Harry dominating Petunia in terms of influence. Maybe he starts to influence the Dursleys' household with his wizarding ways in a positive way. He could introduce new ideas and values that Petunia initially resists but eventually has to accept, thus Harry dominates in terms of changing the family environment.
Well, it depends on the specific fanfiction. Some fanfic authors like to play around with the relationships and concepts in the Harry Potter universe. So it's possible that in certain fanfictions, Petunia is Harry's pet. However, in the canon story, Petunia has a very different role as Harry's rather unfriendly aunt who begrudgingly takes him in. But fanfiction allows for all kinds of creative interpretations.
One great Petunia fanfiction could be one where she has a moment of self - realization. Maybe she discovers some of Lily's old magic things and starts to understand the wizarding world better. It could show her in a more sympathetic light, perhaps she even tries to protect Harry in her own way.
In the world of 'Harry Potter' fanfiction, most writers tend to stay within the boundaries of the original story's spirit. The concept of Harry Potter impregnating Petunia is so far - fetched and inappropriate that it is highly unlikely to be a part of any well - regarded fanfiction. Fanfiction usually focuses on exploring relationships that are more in line with the potential of the characters as presented in the original, like friendships, romantic relationships among peers, or the growth of the characters within the magical world.
One popular theme is the exploration of Petunia's jealousy towards Lily. In fanfiction, this can be delved into deeply, showing how it might have affected her relationship with Harry. For example, some stories might show Petunia struggling with her feelings of envy for Lily's magical abilities and how that spills over into her treatment of Harry.
One common theme is redemption. Often, Petunia is portrayed as having a chance to redeem herself for her past treatment of Harry. For example, she might finally show some love or understanding towards him.
Well, it depends on your definition of 'good'. Some might focus on the complex relationship between Petunia and the magical world in the context of Harry Potter, while others might take a more creative or off - beat approach. You really have to dig through different works to find one that suits your taste. There could be some that explore Petunia's character in depth, perhaps showing her envy of the wizarding world in a new light, or creating a scenario where she has a more positive interaction with the magical elements, which could be quite interesting to read.
One possible fanfiction could be about Petunia discovering her latent witch powers later in life. Maybe she stumbles upon an old family heirloom that unlocks her magical abilities. This could lead to a whole new dynamic in her relationship with Harry, as she now understands the world he belongs to on a deeper level.
Yes, there are some out there. You can start by looking on fanfiction platforms like FanFiction.net or Archive of Our Own. Some writers might explore an alternate universe where Vernon and Petunia show love towards Harry in a more positive way, perhaps due to a change in circumstances or a different understanding of his situation.