Hermione felt empty after the war. As if a Dementor had deprived her of her soul. She never confided to anyone completely - she didn't feel such a need. She thought that her wounds were only hers and no one should know about them. It was only with the passage of time that she learned to seal off her wounds and open her soul more than she usually used to during the first post-war years. Time spent in Hogwarts, though short, gave her space to put her life back together. Thinking about who she was, who she is and who she should be in the future. She never returned to that Hermione from before, she was never able to look at the world as if nothing had happened. The burned scar on her hand reminded her of it too much. 