Tilting his head and folding his arms across his chest, impatient and disbelieving, when Iron Man discovered staring one again did not deliver answers he mentioned, "This is not a good way to begin this relationship." As much as he wanted to, Tony couldn't exactly trust her, no matter what Cap seemed to think. Her handing the Avengers information that they could then attempt to verify and take precautions, that was one thing. Her flat out denying any knowledge, that was quite another. That made this whole effort kind of a waste.
"I've seen it, there's no blame here-- yet, you keep that up and there just might be-- so there's no reason for the act. Spill, sweetheart, or give me back my toys." His strange discussion with her brother nagged at Tony, encouraging him to be a little extra patient with both of them, but Tony was already annoyed. Extra annoyed now that he remembered Quicksilver, his easy capture, his success, was back in Daddy's arms because of his fuck up. With his recent track record, how had he expected this to go smoothly at all?