The realization that they weren't quite on the same wave length came quickly but Wanda shrugged it off because she couldn't think of many times they were ever really in sync. You expected one thing of Tony and, occasionally, he surprised you- which didn't actually make Wanda any less angry or fed up with him. This was just a tipping point after months and months, maybe even longer, of never living up to whatever Tony's expectations were and becoming a constant disappointment. Of trying to make amends and being rebuffed. Of being guilty of being herself which, apparently, was the wrong thing to be. It was exasperating and exhausting to try and stay in Tony Stark's good graces.
At any other time (or in any other time) she would have welcomed Tony actually talking to her, trying to tell her something, not just flirting or avoiding a subject. Now she didn't really want to hear it. Her reasons were her own, whether he liked them or not. Just because she was cautious didn't make her wrong and she sure as hell didn't have to defend herself to him. She did this to try and do the most good she could, not for the adventure. They all did these reckless suicidal stunts but usually it was to protect something or someone they cared about. As far as she'd seen it always seemed like Tony was just doing it to escape from something and what kind of reason was that? He could put whatever spin he wanted to on it, dashing adventurer or romantic hero or futurist savior of mankind. In the end he was still just a man hiding himself in a metal suit.
"You're right," she answered evenly, "You are. So sorry to disappoint you yet again but you know how I operate and if you've had such a problem maybe you should've just kicked me off the team." Because, clearly, Tony Stark knew just what was best for the splintered group that he wasn't even a part of anymore- because he'd found some way to escape that, too.
Say what he would about her appetite for danger, it was Wanda walking forward now towards the massive dark shape in the sand, the dome reforming into a bubble to go right along with her. She didn't even glance back at Iron Man; if he didn't want to be bowled over by the energy arcing behind them then he could keep up.