What Tony couldn't possibly have known, but could have surmised, was that holding Loki meant holding him until someone could come to her aid. The Avengers had, but not soon enough because Loki had escaped and for now, that was that. Of course there were probably other options, there always were, but she'd chosen the course she'd chosen and even when she tried to go about it the right way she'd do it wrong in somebody's eyes. That was just life. At least she hadn't died, it was the small things that counted. As it was, she had no way of knowing Tony's disapproval (though the abrupt subject change was a bit of a tip off) and so she couldn't defend herself. Nor should she have had to, at least not to him.
"Oh?" she asked and for a second considered sitting beside him but instead took the loveseat nearby and waited, staring at him expectantly. So there it was, the briefcase and the real reason he was here. Still, that he'd brought her anything was as pleasant a surprise as his showing up here at all. She couldn't think she'd done anything for him recently to warrant any kind of 'something' he'd bring and if it was something for the Avengers, he didn't owe them anything anymore, least of all her.