'Rash' was spot on, and Tony trapped it under his fingertip on the tabletop with a nod of appreciation. Okay, it was obvious that Cassie would do something rash, Tony spent evey day with her railing against that impulse (and setting a poor example), but the question really was how rash and if she had the sense to get herself out of it before it got bad. This was definitely his fault. If he had come up with some arrangement that had her spending more time with Steve and less time with himself, Cassie might have been a more rational and thoughtful person by now.
It was Tony that cracked, just a little, when Kate made her attempt at reassuring one or both of them and Tony had to laugh, weak and high, because he didn't know what else he was supposed to do with that. He clamped his hand over his mouth to keep from laughing any more (or worse) and took a steadying breath through his fingers before he could smile and shrug it off. Kate was right; they both knew Cassie was bullheaded enough to have gone off on her adventure whether they tried to stop her or not, so it was just as likely she'd steamroll through anyone else that got in her way, too. "I'll talk to Nick," Tony said again, resolutely this time because he didn't actually mean it and Kate didn't have to know that. He would sneak through S.H.I.E.L.D.'s records for a young agent named 'Daisy' and find out what she had been working on, without having to involve the Director. After another counted breath, he gestured vaguely to the crumb littered table and offered, "Do you want anything else?"