The Pinal County Sheriff's Office released some 911 recordings Friday in the case of Connie Villa, who remains jailed without bond and has pleaded not guilty in the case.
She's charged with one count of first-degree murder in the death of her 13-year-old daughter and four counts of attempted murder of her three younger children and her ex-husband.
A call to a public defender who represents Connie Villa wasn't immediately returned Friday. But attorney April Elliott has previously declined comment in her client's case.
Adam Villa of Casa Grande told authorities he was trying to pick up his kids on Christmas Day in accordance with the couple's custody agreement.
"I was just stabbed by my ex-wife. I'm heading to the hospital," he told a 911 dispatcher as he drove himself to an emergency room. "I went into the house and (Connie) got behind me and the next thing, I felt something stab me in the back."
Police have said Connie Villa told investigators she suffocated her oldest daughter when the girl wouldn't take prescription narcotic drugs.
The other children, ages 3, 5 and 8, were treated at a hospital and released. Police say they had trace amounts of opiates in their systems.
According to police, Connie Villa said she didn't want her ex-husband to have custody of the children.
During the 911 call, Adam Villa tells dispatchers he did not see the children at the house before he was stabbed.
"I knocked and asked where the kids are and she said they were getting their shoes on," he said.
Adam Villa suffered non-life-threatening wounds, and his three children are living with him now.
Connie Villa was arrested Dec. 29 after she was released from a Phoenix hospital for treatment of what police believe were self-inflicted stab wounds.