Harry initially feels a great deal of resentment towards Aunt Petunia. She has been cruel to him, making him live in a cupboard under the stairs and treating him like an outcast in his own home.
As the series progresses, Harry's feelings become more complex. He realizes that Aunt Petunia is in some ways a victim of her own upbringing and her fear of the abnormal, which in her eyes includes magic. However, he still doesn't forget the years of mistreatment.
By the end of the series, Harry seems to have a sense of pity for Aunt Petunia. He has grown so much and seen so many things that he can look at her with a more understanding eye, even though their relationship will never be a warm and affectionate one.
She is very much concerned with appearances and normalcy. In the Dursley household, everything has to be in a certain order and conform to what she deems as a proper, non - magical lifestyle. This is part of the reason she is so resentful of Harry and his magical abilities.
One possible fanfiction could be about Aunt Petunia having a strange encounter with a lemon - themed magical object. Maybe she accidentally uses it in a spell (in a non - canon, fan - created way) that makes her see a different side of the wizarding world she has always despised. This could lead to her having a change of heart about Harry Potter and his world.
One possible fanfiction could be about Aunt Petunia discovering her latent witch powers late in life. Maybe she starts having strange dreams that lead her to an old family heirloom that unlocks her magical abilities. She then has to deal with the shock of it all while also trying to keep it a secret from the Muggle world around her.
Harry starts as an innocent and somewhat naive boy. As he discovers his true identity as a wizard and his connection to Voldemort, he begins to grow. He learns about friendship, loyalty, and sacrifice. For example, his friendship with Ron and Hermione helps him face many challenges.
The story could be different in that Aunt Petunia might become more empathetic towards Harry. If she reads fanfiction, she might start to see different interpretations of his situation and understand him better, which could lead to a change in their relationship at home.
Well, it could be quite strange. Maybe she's secretly a bit more interested in the wizarding world than she lets on. It might be a way for her to explore the stories from a different perspective, one that's not as judgmental as her usual self towards magic.
Aunt Petunia could discover a lemon tree in her garden that has magical properties. Since she's always been envious of the magical world (even if she doesn't admit it), she might try to use the lemons from the tree to gain some sort of power or advantage. For example, she could think that if she eats the lemons, she'll become more beautiful like the witches she's seen in Harry's pictures.
There are fanfictions where Aunt Petunia has a change of heart towards Harry much earlier in the story. Instead of treating him badly, she starts to secretly teach him some basic things about the wizarding world that she learned from her sister Lily before she passed away. This could add a whole new dynamic to Harry's early years at the Dursleys.
One interesting 'Harry Potter Aunt Petunia' fanfic could be the ones that explore her relationship with Lily before she passed away. It might show how they grew up together and how their bond changed over time. Maybe there are fanfics where Aunt Petunia has to face her own insecurities regarding magic and her sister's special abilities.
In the end, Snape's character development reaches its peak when his true loyalty is revealed. His self - sacrifice and his role in the fight against Voldemort are fully exposed. He transforms from a seemingly one - dimensional 'bad - tempered teacher' to a complex and heroic figure in the eyes of the readers.