Salsa Dance Technicals : The Yin and Yang in Salsa Dance

There is something to be said about social dancing. It is a different type of dancing compared to performing - (of course you'll say thats a given). But sometimes, some people forget that. In my case as a leader, its my job to 'entertain' and 'play' with the lady - as well as make her look good. However, what should I be expecting from the lady? Mainly to show me that she's having fun - that gives me the reward that all my hardwork (doing the combos, being smooth, keeping timing, footwork, smiling..etc) is paying off. However, for some dancers, I feel this simple concept is lost.