Pickles Marie is a great name. She may be extremely frightened and hinding somewhere close by. Go out early in the am and late evening when its quiet and call her name. My cat escaped during a storm and was hiding in the bushes (under a log) for two days. In the quiet of the evening I heard her cry out in response to my calling her. It's been mentioned that tuna in oil left outside may attract her. They now have a GPS collar for escape artists.
Good luck and please let us know when she returns.