When Cassie paused, Tony took a deep breath with her and bit his tongue. That wasn't something he could fix, and Cassie didn't seem to want to explain. Maybe later. Hopefully before Hank snapped like he did in the Young Avengers' universe. Never mind the possibility of Hank being stable; god help them all if he got any more loco. The injection of Cassie and her possible future knowledge to disrupt the timestream might have been enough to save Tony any of the trouble, though.
Even when Cassie was laughing, Tony was just studying her, considering this little (occasionally tiny) girl's monumental weight in a world she did not belong. It was probably about time to properly accept her apology. Which was, Tony plucked the cone of cotton candy back from her hands, mostly eaten but his mostly eaten peace offering. It didn't even look right in his hand as he considered it. "Here's a tip:" he offered when he could bring himself to nibble on the cotton candy again, "just tell yourself he's the experiment and it all gets a lot more interesting. I haven't been able to document any conclusions yet and I've known him since I was a virgin, and I invented an electric car that was actually sexy. That is a fucking riddle."