After finally resolving the missing Kritzerland performer last week and getting her all the material, she e-mails today and says she's sick and has found us a replacement. But the replacement can't come to today's rehearsal. I'm ready to cancel the show, which we've never done in our history, but this one is not our usual show and there are group numbers and duets. Not sure how I want to deal with this and no one has assured me that she can learn all this by heart by show time.