RAPID CITY - United States Attorney Alison J. Ramsdell announced today that U.S. District Judge Camela C. Theeler has sentenced a woman from Tonganoxie, Kansas, convicted of Enticement of a Minor Using the Internet. The sentencing took place on August 18, 2025.

Duncan Sioux Witt, 29, was sentenced to 10 years in federal prison, followed by five years of supervised release, and ordered to pay $100 in special assessments to the Federal Crime Victims Fund. A federal grand jury indicted Witt for the charge in August 2024. She pleaded guilty on April 30, 2025.

During the commission of her crime, Witt was employed at Douglas High School in Box Elder, South Dakota, as a special education paraprofessional teacher's aide. The victim was a student receiving special education services at the school. No later than February 2024, Witt began sending the boy sexually explicit messages, as well as sexually explicit images and videos of herself, using Snapchat. Over time, Witt induced the boy to send her sexually explicit pictures and videos of himself, which she saved in her Snapchat account. Witt and the boy exchanged thousands of messages over the course of several months. When the victim turned 18, Witt convinced her former husband to allow him to move into their home. Then, Witt provided the victim with alcohol and began a sexual relationship with him. Witt repeatedly told the victim she was pregnant with his child and convinced him she intended to leave her marriage to be with him.

The investigation revealed Witt had inappropriate conversations over Snapchat with multiple other students, in addition to the victim in this case. Witt was arrested in South Carolina while working at an elementary school.

This case was brought as part of Project Safe Childhood, a nationwide initiative to combat the growing epidemic of child sexual exploitation and abuse, launched in May 2006 by the Department of Justice. Led by the U.S. Attorneys' Offices and the DOJ's Child Exploitation and Obscenity Section, Project Safe Childhood marshals federal, state, and local resources to locate, apprehend, and prosecute individuals who exploit children, as well as identify and rescue victims. For more information about Project Safe Childhood, please visit https://www.justice.gov/psc.

This case was investigated by the Box Elder Police Department and the South Dakota Internet Crimes Against Children Task Force. Assistant U.S. Attorney Heather Knox prosecuted the case.

Witt was immediately remanded to the custody of the U.S. Marshals Service.