The Murder of Jacque Sue Waller

Jacque Waller had just finalized her divorce from husband Clay when she drove to Jackson, Missouri to pick up their son from his home. She told her sister and her boyfriend that she would be right back. She was never heard from again.
Police recovered her car, pieces of her purse and fragments of her cell phone along a highway, but she remained missing for months then years. In a diary recovered in the car, Jacque wrote, "He told me a divorce would be my death sentence."
What happened to a beautiful mother that fateful day?