She may notice Data's head twitch slightly. A look of confusion crosses over his face, as he tries to figure out if there was some reason she shifted position in that way.

He does not get very far with his analysis, however. Both because he does not have enough information and because he is still distracted. (He does far too much painting, he realizes. He should really endeavor to explore sculpting processes more fully sometime...)

His mouth is slightly open for a few moments before he speaks again. "But you say you have difficulty reading me?" He manages to bring his gaze back up to her face by the end of the sentence.