She pushes her hair out of her face and thinks about cutting it short. She was half-joking before, about tearing it out, but now...she takes her hands over her skull, and she wants it short. She wants a transformation. Physical representation to show she’s changed. Long hair isn't Hermione anymore, it’s not. It’s not practical for war, either. It can be grabbed during combat, and it takes too long to get ready in the morning. She’s sick of it. 