"Oh!" Greta's hands fly to her face as the truth of the matter finally strikes her, then drop as it subsequently sinks in. "Oh." He can't say what he really means, more like the opposite. Why didn't she catch on right away, instead of being short with him? Of course he's not normally like this - he's normally kind, which means he's probably been infuriating people all day, the poor man. "I'm... I'm so sorry!"

So, if she's understanding things correctly, he's not fine, and everything is terrible. Yes, that seems like a far more accurate assessment of the situation than what he actually said. She lays a comforting hand on the Balladeer's arm, then looks back at the mass of greenery that is Johnny. "I think his curse is that he's saying the opposite of what he really means. Is that right?" She turns back to the Balladeer, expecting a 'no' if she's correct.