Tony's look earned him a defensive scowl as Wanda mistook his bitterness for condemnation. As if she were in a position to handle things differently, or was even responsible for what had happened. Tony went through the portal on his own, after all, and she'd done the best she could given the circumstances. Wanda wasn't Tony's keeper (and her trying to help him had rarely turned out well for either of them). Even though she had misgivings about the stranger at first, he was still Tony.
"I don't really know," she answered, somewhat stiffly. What the other Tony had done here was sleep with her and then leave, what he'd done since he'd gone, Wanda didn't know beyond what she'd seen on the news. Information that Tony could pull up himself faster than she could likely tell him. "Tony, he's you. He's probably wherever you'd be right now." Wanda sighed and offered, If you need to get somewhere fast, I'll teleport you." Alright, so maybe she did feel a little responsible.