You already messed up by putting the ball in her court. Thats exactly what girls like that want. You should have never given her that controll. At this point what Id do is show up at her restaurant with a girl that looks better than she does. Im willing to bet she´ll be the first one to try and come over and talk to you. She might even be ringing your phone by the end of the week. If she does, dont talk to her though. Just keep stringing her along.