"The sand stuff." It probably goes without saying that he's dreamed about the arena before. "It's just…" she sighs and runs a hand through her hair, wondering how best to explain it. She's pretty sure Peeta's not going to like it if her suspicions are correct, even if it does mean that this really wasn't his fault.

"Every so often, there's a sort of… big dream. One where you're likely to run into other rifties, because a lot of them are there. It's less like you're in one person's dream, or like they're in yours, and more like… like everyone is in the rift's dream, or something. And if you've never dreamed about that kind of sand stuff before, and neither have I… it had to come from somewhere. I've brought things from my world into other folk's dreams before, but it was always things I knew about." So if the bog wasn't her doing, and it wasn't Peeta's doing… maybe it wasn't really Peeta's nightmare.

Which, if it's true, might mean that the nightmare is still happening out there, just waiting to pull them back in as soon as they fall asleep again.