That was certainly unexpected. Tony was knocked around inside the suit as he slammed on the breaks, just barely stopping from smacking into the giant girl's arm like a sun-drunk bee. The likeness wasn't averted, though; he bobbed around in the sky watching the proceedings with a hand to his helmet, recovering from the sudden stop and the sight of a most unexpected hero. That was definitely Pym particles at work. Someone had done their research.
When she settled on the roof, the chaos became distant noise below, and still Tony just watched her until he couldn't take it anymore. She wasn't going to lead him to some terrorist cell tonight. She had just saved a man from death. Keeping a respectful distance this time, Iron Man landed some feet from her on the roof, hands raised in surrender and slow to reach for his helmet, pulling it off to try to assure her of gentle intentions. "I see where the name comes from. I like it. More clever than anything..." Tony started to say, dropping off when he realized he would rather not talk about Scott. Not right away. "It's no 'Giant Girl'."