I got kind of a different meaning from it, not that she is learning to live again, but that she is forcing the smile and the laugh in an attempt to let him down easy. Since she probably knows his previous relationship problems she doesnt want to just say no, but she doesnt want to lead him on either, so the forced smile and ambiguous "we'll see" is her way of turning down an emotionally injured and obviously depressed individual who might not be able to handle rejection well in his stage of recovery.
I got kind of a different meaning from it, not that she is learning to live again, but that she is forcing the smile and the laugh in an attempt to let him down easy. Since she probably knows his previous relationship problems she doesnt want to just say no, but she doesnt want to lead him on either, so the forced smile and ambiguous "we'll see" is her way of turning down an emotionally injured and obviously depressed individual who might not be able to handle rejection well in his stage of recovery.