In this fanfiction, perhaps Hermione might be even more excited than in the original story. She could start preparing for Hogwarts immediately, reading every book she can find about the school.
One possible plot in this fanfiction is that Hermione gets the letter earlier than expected. This early notice gives her more time to study and she might even try to contact some of the professors in advance. She could be so eager that she starts making her own potions or practicing spells at home, with some unexpected and humorous results.
Well, it could show a different side of Hermione's family. Maybe they have some magical secrets of their own that are revealed when she gets the letter. For example, there could be a family heirloom that is actually a powerful magical object. And Hermione might learn some family spells before she even goes to Hogwarts.
She might be overjoyed. In the 'Harry Potter' world, getting the Hogwarts letter is a big deal. Hermione is a book - loving and eager - to - learn character, so when she gets her letter, she could immediately start preparing for her new adventure at Hogwarts, like gathering all the necessary books and supplies.
Obviously, Hermione herself is the most important. Her parents would also play a crucial role as they react to the news of their daughter being a witch.
In this type of fanfiction, if Hermione is adopted by the Hogwarts staff, she could gain a different level of access to the school's resources. For example, if she was adopted by Flitwick, the Charms professor, she might have unlimited access to the Charms classroom to practice and experiment. This would make her even more proficient in Charms than she already is in the original story. And she could develop new spells or improve existing ones.
In the fanfiction, there could be a mystery at Hogwarts that brings them back together. For example, a dark magic artifact that was hidden long ago resurfaces. Draco, with his Slytherin knowledge of the castle's secrets, and Hermione, with her vast research skills, team up to solve the mystery. Along the way, they discover new things about each other and themselves, and perhaps even develop some romantic feelings, though it would be a very unexpected and complex relationship given their past.
In this kind of fanfiction, Hermione might get a new look that completely changes how others perceive her. For example, she could change her hair style from the bushy curls to sleek straight hair. This new appearance might attract the attention of characters who previously didn't notice her in that way.
Well, in the fanfiction, Hermione might be publicly scolded by the Howler in front of her friends. This could lead to her feeling extremely embarrassed. Maybe she made a mistake in her studies or violated some school rules in the fan - created scenario.
They might become fast friends. In some fanfictions, they could discover their shared love for magic books even before Hogwarts. This early encounter could lead to them sharing secrets about their strange magical experiences prior to school, like Hermione telling Harry about her accidental magic incidents and Harry sharing his strange encounters with the Dursleys. This would strengthen their bond and perhaps make their Hogwarts years even more intertwined.
Hermione could also get some extra study time in the library. With no other students around, she would have access to all the books she wants without any distractions. Maybe she would find some really rare and powerful spells or magical knowledge that would help her throughout her time at Hogwarts.
Her parents, of course. They would be an important part of the story as they react to the news. They might be shocked at first but then supportive.
The Hogwarts letter might be the key to understanding Harry's disappearance. Since it's a connection to the wizarding world, it could be that there are hidden messages in it that only become visible when Harry is in trouble. The Ministry of Magic could get involved as well. They might suspect that Harry has run away deliberately to avoid some new danger that they are not aware of, but the letter could prove otherwise and lead to a race against time to find him before it's too late.