[Shuichi looks oddly relieved when she mentions the painting, but he looks around the car before answering. Just to double check that they're the only two people in the car. Because he knows HE didn't say anything about her ears and her voice doesn't sound like the one he heard before, so if there's no other possible human culprits...]

I didn't hear anything about your ears but...um. I could have sworn I heard this painting [A gesture to the woman with the parasol.] say something earlier. So I don't think it sounds stupid...

[Crazy? Yes. But the situation is what's crazy, not Blake.]