[His response makes her dryly laugh because it's depressing that the simple act of bathing is currently a far fetched luxury. She doesn't say anything more about it, because thinking too much on things she can't have is depressing. ]

We've been here weeks now.

[She's carrying a rock with two hands, and leaves it by him as she steps away to find another.]

It feels like we're still back at the beginning, trying to scramble to stay alive. Having this much water will help.