The woman’s loo was empty, so Hermione immediately felt herself relax. She put on the cold water and stuck her arm beneath the stream, using her other hand to gently massage the layers away, gradually moving up to her shoulder. Soon the water was running clear again, and Hermione took her arm away. In the wan light, her skin looked a bit green, like mud. She examined both forearms together, braced to see the familiar scar on her left arm, the vulgar word stretching from wrist to elbow.