But despite a swift arrest, the investigation into her homicide. Webmore than a month before cook's killing, the 911 call center in dallas was criticized after callers reported that they were unable to reach an operator while trying to. Webit has always been the city's contention that the mishandled 911 calls and the cops' late arrival to deanna cook's house are not why she was buried at laurel land. Webtonyita hopkins breaks her silence on answering the chilling 911 call in which deanna cook is heard pleading for her life. Hopkins describes a 911 call center. In a 911 tape obtained by news 8, she can be heard saying, i have a stalker. she was afraid.