"Or the food. It's something in something, rather than disease." Her lack of trying to get up says everything.

"I didn't realize it was Elvhen, though. Old, certainly. What are you seeing that makes it Elvhen?" Other than the old. A lot of old things were made by the Dalish, but he's not exactly familiar with what says Dalish and what says humans when it comes to buildings. At least he knows that if it's underground, it's made by Dwarves.

There's also a good reason to keep asking questions - if she's working to think up answers, she's not working to get up, and she's not paying attention to how much more tired she's getting. Soon she'll be resting, a very rare sight.