Woman Pleaded Guilty in Fatal Casper DUI Crash
Carrissa Westphal pleaded guilty to two counts of aggravated vehicular homicide in a 2025 head-on collision.
Updated on Oct. 9, 2026 in Crime — General
Carrissa Westphal has pleaded guilty to two counts of aggravated vehicular homicide stemming from a head-on collision on CY Avenue. The crash resulted in the deaths of Mandy Lee Butler and Randy Butler.
Why it matters
The guilty plea resolves the criminal case against Westphal, who was found to have a blood-alcohol concentration significantly higher than the legal limit at the time of the fatal incident.
Westphal pleaded guilty to two counts of aggravated vehicular homicide, with a reckless endangerment charge dropped. She faces a maximum prison sentence of 40 years.
The players
Carrissa Westphal
She is a 34-year-old resident of Colorado who pleaded guilty to vehicular homicide charges.
Mandy Lee Butler
She was a 43-year-old victim who died in the collision.
Randy Butler
He was a 78-year-old victim who succumbed to injuries from the crash months later.
The details
Westphal, 34, admitted to driving the wrong way while intoxicated, resulting in the head-on crash on CY Avenue. Mandy Lee Butler, 43, and 78-year-old Randy Butler were killed due to injuries sustained in the incident.
Timeline
November 7, 2025: The head-on vehicle crash occurred in Casper.
January 26, 2026: Randy Butler died from his injuries.
October 9, 2026: Westphal appeared in court to plead guilty.
Legal Context
This case follows standard judicial patterns for prosecuting aggravated vehicular homicide involving extreme intoxication. Local courts in Casper continue to apply strict penalties for incidents involving blood-alcohol levels exceeding double the legal limit.
The resolution of this case brings closure to a high-profile incident that occurred on a major local thoroughfare. Residents are reminded of the continued enforcement of DUI laws on local streets to maintain public safety.
The takeaway
Driving under the influence carries severe, life-altering legal consequences that extend far beyond the immediate crash site. Public safety in Casper remains dependent on strict adherence to the legal blood-alcohol limit of 0.08%.
Further reading
For more updates on local legal proceedings, visit the Crime — General section.
