Not everything is black and white.

Yun Meiyi understood what the man was implying. He was providing himself with the excuse to deny all that she has set forward for him. He was trying to portray her as the nice princess who was trying to stain her picture just to avoid the prince. But neither she was the princess he was picturing in his story, nor did she think him a prince with whom she could partner in play. 

She wanted to tell me how wrong he was to think what he was thinking. But since he didn't make his comment too explicit, she couldn't. Hence, she held the torturous desire within.