Ron wasn't so sure. "I haven't got a memory though, 'Mione. I wasn't of any use to her, remember? She's killing those with the nightmares. And she told me she wanted me to live with memory of Penny's death and she wanted me to tell people that she couldn't be conquered. She said 'the only man who ever could is long dead and you are all playthings to me' or something like that. What do you think she meant - she'd been conquered once before?"
Ron looked at her meaningfully. "We need to share all of it, I would say. That was the point of the first meeting, yeah, to pool our knowledge? Well now we have more. This witch had a box with her - I think it might be the box that was stolen from the Department of Mysteries. She took it out of her robes before Penny had died and opened it, then set it on the floor. And then Penny's spot on her arm, I watched it...detach from her arm. It turned into smoke and flew into that box, which then closed by itself. The dark spots are the memories, 'Mione, that's why they're not on the bodies when we find them."