Waziri Mayai Wa Maradhi
JF-Expert Member
- Jan 28, 2026
- 310
- 82
The case of Win Gikonyo, a Kenyan-born immigrant living in Washington State, has highlighted the complex intersection of mental illness and criminal responsibility.
Gikonyo, who was 26 at the time, was described as outwardly independent and financially stable, while privately struggling with severe psychiatric problems. According to her attorney, she had a history of mental health hospitalizations but had stopped taking her prescribed medication.
On April 18, 2018, Gikonyo experienced an acute psychotic episode involving auditory and visual hallucinations. Believing she was being pursued, she drove a Hyundai Elantra at speeds exceeding 100 mph (161 km/h) through Tacoma.
Near 84th Street and McKinley Avenue, she attempted to pass traffic and crashed into a Toyota Prius driven by 60-year-old Marianne Burton, a pizza delivery worker. Burton died at the scene.
Police initially suspected intoxication, but toxicology tests found no alcohol or drugs in Gikonyo’s system. The case subsequently focused on her mental state at the time of the crash.
On May 14, 2019, Gikonyo pleaded not guilty by reason of insanity. After reviewing evidence from defense experts and state psychologists, Judge Frank Cuthbertson ruled that she did not understand the nature and quality of her actions at the time of the crash because of severe psychosis.
The court therefore accepted the insanity plea, meaning she was not criminally convicted of vehicular homicide. However, the ruling did not mean she was released. She was transferred to the state mental health system, where she could remain committed for as long as authorities determine that she poses a danger to herself or others.
The victim’s family strongly opposed the insanity ruling, arguing that Gikonyo’s ability to maintain employment and purchase a new vehicle demonstrated that she was functioning normally and should be held criminally responsible.
Gikonyo, who was 26 at the time, was described as outwardly independent and financially stable, while privately struggling with severe psychiatric problems. According to her attorney, she had a history of mental health hospitalizations but had stopped taking her prescribed medication.
On April 18, 2018, Gikonyo experienced an acute psychotic episode involving auditory and visual hallucinations. Believing she was being pursued, she drove a Hyundai Elantra at speeds exceeding 100 mph (161 km/h) through Tacoma.
Near 84th Street and McKinley Avenue, she attempted to pass traffic and crashed into a Toyota Prius driven by 60-year-old Marianne Burton, a pizza delivery worker. Burton died at the scene.
Police initially suspected intoxication, but toxicology tests found no alcohol or drugs in Gikonyo’s system. The case subsequently focused on her mental state at the time of the crash.
On May 14, 2019, Gikonyo pleaded not guilty by reason of insanity. After reviewing evidence from defense experts and state psychologists, Judge Frank Cuthbertson ruled that she did not understand the nature and quality of her actions at the time of the crash because of severe psychosis.
The court therefore accepted the insanity plea, meaning she was not criminally convicted of vehicular homicide. However, the ruling did not mean she was released. She was transferred to the state mental health system, where she could remain committed for as long as authorities determine that she poses a danger to herself or others.
The victim’s family strongly opposed the insanity ruling, arguing that Gikonyo’s ability to maintain employment and purchase a new vehicle demonstrated that she was functioning normally and should be held criminally responsible.
