Lewandowski said, “OK, maybe I should just tell you now. OK, so last night I was advised to slit her throat.”
The dispatcher asked where the girl was and Lewandowski said she had wrapped the girl up and put her in a trash can in the back yard.
Lewandowski told police several times that someone told her to kill her daughter and that something worse would happen to her if she did not, the Star-Telegram reports. She told police she had killed the girl on Sunday night.
"Lewandowski made several statements about causing harm to her daughter because she was told to do so, or something worse would happen," a detective wrote in an affidavit.
Police said they took the victim's 18-month-old brother into protective custody. He was unhurt. Krystal Lewandowski, 34, was booked into jail Monday night on a charge of capital murder of a person under 10 years old.