She isn't explaining, but she's avoiding it clearly enough that Wash can understand that she doesn't want to talk about it, whatever the reason might be. That's fair enough, Wash has never been the type to pry, but he does note that, watching her out of the corner of his eye for a moment before he answers her.

"A planet in the middle of a civil war -- so not that much different." A war that he had nothing to do with, much like this one. More lightly, "At least it wasn't winter, though."