According to court documents, Worley told police her husband was divorcing her and going to take the children. She said, "I did not want him taking them, so I stabbed them."
Worley's husband filed for divorce on Wednesday.
Worley used a knife to kill Tyler, 7, and Charlee, 3, according to court documents. Both children were found inside the girl's bedroom with stab wounds to their neck. Police found a Kabar style combat knife on the floor of the room.
Brandi Worley told police, "I did not want him to take my kids, I just wanted to die with them."
Brandi's husband, Jason, was awakened by Brandi's mother screaming and when he walked up stairs he told police that Brandi said to him, "now you can't take the kids from me."
Autopsies were performed on the children at Terre Haute Regional Hospital. The coroner determined the cause of death for each child was stab wounds to the neck.