Rosita's skin is fairly thick; inappropriate humor is as good a coping mechanism as anything, really. She's just not prepared to listen to it from people who have no idea what they're talking about when she lived it.

She turns away from the window when he moves away, stays nominally facing him, but she's still largely paying more attention out the window. Until he says that anyway and she snorts, looking over at him.

"How'd you figure?" It's not as hostile as it could be. If that's his opening line, she'll consider considering it.