A plotline could involve them discovering new magical abilities or powers as a result of this trauma. It's possible that the emotional upheaval of being disowned unlocks latent magic within them. They could then use these new powers to not only better their own situation but also to help other outcasts in the wizarding world. Maybe they start a secret group for those who have been rejected by their families.
They might cope by throwing themselves into their studies. Since both are intelligent and academically inclined, they could focus on learning more advanced magic. This would not only distract them from the pain of being disowned but also make them more powerful. For instance, Hermione could study ancient spells while Harry could practice defensive magic.
One possible reason could be her involvement in the wizarding world. If her parents are muggles and they find out about the extreme dangers she faces in the magical realm, they might disown her out of fear for her safety. Another reason could be if she starts to show more loyalty to the wizarding community than to her muggle family, making them feel like she no longer belongs with them.
She might throw herself into her studies even more. Since she has always been studious, she could use her academic pursuits as a way to distract herself from the pain of being disowned. She may also lean more on her friends in the wizarding world, like Harry and Ron, for emotional support.
Hermione would be a very likely character to support Harry. She's his best friend and is always there for him in the original story. Ron too, as they are a trio. Neville could also step up, as he has his own growth arc and could understand Harry's feeling of being alone to some extent.
One plotline could be Harry finding a new family among his friends at Hogwarts. They become his support system and help him grow in ways his biological parents couldn't. Another could be Harry's journey to discover why his parents disowned him and uncovering some dark family secret along the way.
One possible plotline could be Harry feeling extremely lost and alone at first. He might have to find a new place to live, perhaps with the help of his friends like Ron and Hermione. He could struggle with self - worth, constantly wondering what he did wrong to make his parents disown him.
Well, it could be that Harry ends up in a new magical community that accepts him for who he is, away from the shadow of his disowning parents. He might learn new types of magic that were not taught in his previous life with his family. He could also meet a mentor figure who helps him through the tough times. And then, he might use his new - found knowledge and skills to face his parents again, but this time with confidence and self - assurance.
One possible reason could be a misunderstanding. Maybe he discovers some secrets about his parents that he misinterprets. For example, if he finds out they were involved in some dangerous or morally ambiguous activities in their youth that he doesn't fully understand at first.
Harry would likely become more self - reliant. Without the support of his parents, he'd have to learn to take care of himself. He might grow more cautious and distrustful, especially if he doesn't know the real reason for the disownment.