At which point something happened which was totally unexpected to her because Mike had never explained that it was possible.  She had been letting herself receive as much as possible of the stranger's emotions, intentionally teasing him with eyes and body, and relaying what she felt from him back to Mike - when suddenly the circuit was completed and she was looking at herself, seeing herself through strange eyes, much more lavish than she considered herself to be - and feeling the primitive need with which that stranger saw her.