The body of Kohberger's 3-month-old son, Alijah Mullis, was found Jan. 29 along a remote Galveston County road. The boy's father, 21-year-old Travis Mullis, has been charged with capital murder after he allegedly told police he stomped the boy's head.
An arrest warrant affidavit accused Kohberger of allowing Mullis to take the baby from the family's house in Alvin in the early morning of Jan. 29, even though he had made menacing statements toward the children.
"Kohberger stated that Travis Mullis indicated to her that he was having flashbacks from being sexually abused as a child and told her that he had to get out of there, meaning the residence that they were staying in Alvin ... because he might do something to one of the kids," according to the affidavit, which was obtained by The Facts.
Brazoria County District Attorney Jeri Yenne said she waited for authorities in nearby Galveston County to find Mullis before she pursued the charge against Kohberger. Child endangerment is a second-degree felony punishable by up to two years in jail and a $10,000 fine.
"It is important to us to let Galveston County prioritize with the murder charge," Yenne told the newspaper. "Once we had the father back in custody in Texas, then we knew it would be a good time to proceed on mom. We knew we would address mom's actions, but first things first."
Mullis and Kohberger apparently were having financial and relationship problems and often argued, including the night before the infant's body was found, investigators said.
Officials said that after the child's death, Mullis traveled to Maryland, where he has family, before surrendering to Philadelphia police late last week. He is being held in the Galveston County Jail on $1.05 million bond.
Mullis also has a felony charge out of Brazoria County of enticing a child. Alvin police are investigating an allegation that Mullis took an 8-year-old girl from her bed in January, took her to a school or park and asked her to remove her pants.
