Luna watched him, trying to hide the calculations going on inside her as he spoke. But the calculating and considering was definitely going on.
If she asked Will to tell her this story, which details would line up and which would deviate? Luna didn't think it would necessarily mean that one of them was lying, only that memory was a tricky thing and two people rarely saw something the same way.
Luna, who knew something of girls who got themselves involved with the wrong crowds, who was now an expert at being in the wrong crowds, asked "did you know the prophesy would get this girl killed before you told it?" She didn't sound accusatory, more simply interested in what he would say.