A mother whose baby was raped and died after the attack was charged in Missouri after police say she “encouraged” her boyfriend to assault the infant.

On Monday, horrifying details were released on the arrest of Jessica Lynn Howell, 25, after the rape and murder of her 4-month-old daughter, Ashlynn Lilith Peters on December 3 of last year.

Prosecutors allege the baby was raped and murdered by Howell’s boyfriend Jordan Lafayette Prince, age unavailable, and that Prince had previously been convicted of assaulting a child.

The prosecutors’ narrative takes an even darker turn when it comes to the rape and strangling of baby Ashlynn, as court documents state that Howell was not only aware of Prince’s history, but that she consented to and arranged for the fatal assault to occur.

KMOV says the St. Charles County mom was complicit in the alleged rape, reporting:

“Prosecutors say the night before the girl was assaulted and killed, Jessica Lynn Peters had taken Ashlynn with her to spend the night at Prince’s home… Evidence includes text messages from the mother consenting to the sexual assault of her daughter by Prince.”

Of the mother’s charges in the baby’s rape related death, St. Charles Prosecuting Attorney Tim Lohmar cites text message evidence of planning, and says:

“In those text messages she suggested and encouraged some unspeakable things… It is very, very disturbing.”

Neighbor of Prince, John Ezell, saw Ashlynn enter the suspect’s trailer with her mother on the night of the baby’s alleged rape and murder, and he says:

“I saw them take the baby in and out, but you never imagine something like that is going on. I am glad she is charged… I hate to see baby killers go free.”

Probable cause affidavits in the case detail the baby’s rape and horrific injuries, reading:

“Ashlynn was sexually assaulted causing multiple tears to her anus, a massive laceration to her rectum with massive hematoma in the area of the pelvis… The injuries to her anus and rectum of Ashlynn were sufficient to eventually cause her death even without the strangulation.”

Howell has been charged with child abuse and murder following baby Ashlynn’s rape and murder.