My guess is that Cindy never had a number for "Zanny" because Casey was Caylee's mother, not Cindy. I would bet that even if Cindy would have wanted and asked for a number for "Zanny", Casey would have told her to go to hell; I'm Caylee's mother; this is none of your business; etcetera etcetera. Also, it seems that Cindy was trying to make Casey be responsible for herself and perhaps child care for Caylee was Casey's responsibility, as it should have been. Having had a child at 19, I can say that I never once believed that my parents should have been responsible for finding child care for my child and at that age, I probably would have also told them to go to hell had they asked me for the sitter's number.