"Tea only right now, coffee's brewing." A smirk was aimed in Jack's direction. "Tea first, though, for River." Who, apparently, had sailed in the door quite without his notice. Ianto stood and grinned and gestured her in.
"Come on," he urged. "We were waiting for you, so I could pour the tea. Jack, Rose, this is River. She's .. very important to me." It was the best way he could describe her, actually, without resorting to things like 'she's like my sister' or something else trite.