tina then screams, pleading with her mother to help. >> tina, pleading, "mother, please help me. mother, can't you make him stop"? >> and then he said, "die my daughter, die," when she was dying. >> maria held tina while zein stabbed her to death. >> and the telltale sign was the mother's response. what help? no. shut up. >> nowhere on the tape did tina demand $5,000. and there was no reference to tina having a knife. the tape also reveals the isas waited for close to 30 minutes to call police after the murder. zein and maria isa were both charged with first-degree murder.