She could meet other outcasts from the wizarding world. There might be witches and wizards who have left Hogwarts for similar reasons and they form a sort of community in hiding. Maybe she'll meet a powerful but reclusive wizard who can teach her things that Hogwarts never could.
Her friends would be extremely worried. Harry and Ron, especially, would be very concerned about her safety. They might start searching for her immediately, thinking that she could be in some kind of trouble or danger. They know Hermione well and understand that she wouldn't run away without a good reason.
Hermione might run away from the Order because she discovers some secrets within the Order that she doesn't agree with. It could be something related to their decision - making process or how they handle certain information. If she runs away, she may try to form her own group to fight against the Dark side. This new group could bring fresh perspectives and strategies that the Order might be lacking.
The whole dynamic at Hogwarts would be disrupted. His friends would be worried sick. Ron and Hermione would probably set out to find him. Without Harry, Hogwarts would seem less safe to the students. They look up to him as a symbol of hope against dark forces.
One reason could be she feels extremely pressured by the high expectations at Hogwarts. Everyone expects her to be perfect in academics and problem - solving. Another might be that she discovers some dark secret within the school that she's afraid of, like a hidden plot by a group of dark wizards among the staff or students. Or she could be running away to protect her friends. If she believes that her presence at Hogwarts endangers Harry and Ron, she might choose to leave to keep them safe.
A major theme is the exploration of the wider wizarding world. In these fanfictions, Hermione gets to see parts of the magical community that she may not have known about while at Hogwarts. For example, she might discover hidden magical societies or ancient spells. Also, the theme of breaking free from expectations is prevalent. She's tired of being the know - it - all Gryffindor girl and wants to be more than that, so she runs away to create her own identity.
If Hermione runs away from the Order, she might seek out ancient magical knowledge. There are many hidden libraries and places in the wizarding world filled with knowledge long forgotten. She could be on a quest to find such places and use the knowledge to combat the Dark forces in her own way.
One popular Hermione runs away fanfiction is 'Hermione's Escape'. In this story, Hermione runs away due to feeling unappreciated at Hogwarts. It delves into her self - discovery journey outside the familiar wizarding world. Another one could be 'Away from the Norm' where she runs away to explore different magical cultures on her own terms.
It could be Ron. Maybe they had a falling out or some sort of misunderstanding during their relationship, and Hermione runs away when she discovers she's pregnant. Another possibility is that it's a new character, someone she met during one of her adventures or studies. This new character could be from a different magical culture, and their relationship was a secret.
One possible reason could be that she feels misunderstood at home. In the wizarding world, Hermione is a very intelligent and studious witch. If her family doesn't understand or support her magical pursuits, she might feel the urge to run away. For example, if they constantly tell her to focus more on 'normal' things and less on her spells and potions, it could drive her away.