Sorry--I can't figure out how to quote from the closed thread, but re Zenaida's cell phone, according to the affidavit, Casey didn't know Zenaida's cell phone number at the time the police interviewed her.
On page 1 of 4, it states that when Casey went to pick up Caylee and no one answered the door:
"She tried calling Zenaida's cell phone (number unknown) and got no answer"
The police called the number from the card Zenaida filled out when she viewed the apartment. On page 3 of 4, it says
"While the defendant was with Detective Wells, I called the Zenaida Gonzalez I identified from the Sawgrass Apartments"