"I hadn't realised you'd been here that long." And he was a horrid judge of age. She looked quite the same as she'd done the last time he'd seen her, but he knew that she might be anywhere from seventeen to early twenties and he wouldn't be able to guess accurately. He assumed she was at least eighteen since she was working in this sort of establishment had had been drinking something before he arrived.
"And I don't know your timeframe of reference before you arrived. Your information about home might be more current than mine? For my part, I'm doing quite well, thank you. I've never had the luxury of living in peace time before. I find it quite tolerable."