INDIANAPOLIS -- The Indiana Department of Child Services on Wednesday said it would investigate its handling of a girl who police said died after being abused by her mother and her mother's boyfriend.

DCS director James Payne said the department is reviewing a court file on 3-year-old Tajanay Bailey (pictured), who authorities said died this week after being beaten and tortured at home for several days.

The child had been in foster care for most of her life, but the state returned her and her 6-month-old brother to their biological mother on Oct. 31, 6News' Jack Rinehart reported.

"We have a team going through (Tajanay's) file to look at all the issues that may be available," Payne told reporters Wednesday.

The mother, Charity Bailey, and her live-in boyfriend, Lawrence Green, both 20 and of Indianapolis, were arrested Tuesday and charged Wednesday with murder and neglect in the girl's death.

Police said they and paramedics were called to Bailey's apartment on the city's northeast side Tuesday morning after Tajanay stopped breathing. The girl was pronounced dead at a hospital about 30 minutes later.

Police alleged Green used to hang Tajanay on a closet coat hook as punishment for wetting herself, and that Tajanay had been repeatedly beaten before her death.

Investigators believe Bailey kneed Tajanay in the head, and that the girl was punched in the chest and whipped with a belt, Marion County Prosecutor Carl Brizzi said.

"She was systematically tortured over the week of Thanksgiving by the mother's fiance and by the mother," Brizzi said. "Discipline went way over the norm."

Brizzi said he planned to seek life sentences without the possibility of parole for Bailey, who is pregnant, and Green. He also said he'd seek a court order to put Bailey's unborn child into state custody when it is born.

Bailey's 6-month-old son was put into state custody Tuesday.

Janice Springfield, who was Tajanay's foster mother for nearly three years, told 6News that she had warned the state's child welfare system that the girl would be in danger in Bailey's custody.

"(I warned the state) repeatedly that if (Tajanay) went back over there, something was going to happen to her. She was either going to be beaten again or worse," Springfield said.

Payne declined to answer a question about the current status of the caseworker who was assigned to Tajanay, citing confidentiality requirements.

A judge on Friday is scheduled to consider whether to open Tajanay's court file to the public, Rinehart reported.