Search continues for current Mrs. Dallas who went missing under 'unusual circumstances' Search continues for current Mrs. Dallas who went missing under unusual circumstances More family and friends of a missing Irving mother have joined the search for her after she was last seen near a lake in her neighborhood Tuesday. IRVING, Texas - More family and friends of a missing Irving mother have joined the search for her after she was last seen near a lake in her neighborhood Tuesday. Irving police initiated a search. They say they don't treat every missing person's case like this, but they say this one has some unusual circumstances.