Her eyes narrow at his ridicule of her attempt. Better than being a coward, she figures.

They narrow more when he mentions his companion being a changeling. Since when does Strange associate with her kind? It's Childermass, so... does it have to do with his allegiance to the Summer Court?

"What makes you think they did it?" Rita asks, knowing full well that they did. She wants to know why Strange came to that conclusion. Then, if she's feeling generous, she can go ahead and confirm his suspicions. She saw it happen, after all. "And since when are you in the business of rescuing changelings?" Not that bringing him back under the Rose Queen's control is really rescuing.