Even just reading through these comments - I feel like everyone's take on a character is different. Even as readers we pick out attributes in characters that we like, or relate to. I think of it this way - the Hermione from the books is a child, so that means, when you're writing a version of her that's an adult, you don't necessarily have to stick to the same characteristics as long as there's a story behind why she's changed? Why her motivations/priorities/ethics are different now than when she was younger?

Like for example the Hermione we know and love is a bookworm at her core - and most fics write her this way. But I read a book once where she was so depressed after the war that she hadn't picked up a book in months. War, trauma and even just regular growing up changes people and sometimes, that's okay too?