"All right, so I'm a diva. . . . For those of you who don't know me, I am Geneva Jordan, star of stage, screen, and television. (If you didn't see me accept my Tony, I'm sure you heard my voice singing the 'Sweetie Cat' litterbox and Chef Mustachio Frozen Pizza jingles. ) . . . " Now Geneva Jordan has a command performance in Minnesota, a challenging role set in reality. Making her entrance with her usual flair, she is coming to the rescue of her twin sister, Ann, and Ann's husband, Riley. They...