A 23-year-old woman accused of vehicular manslaughter in a crash that killed a mother and daughter pleaded not guilty Wednesday, and court documents state the accused woman is a correctional officer. 

Jiovanni Marina Ferguson is accused of causing a June 18 head-on crash that killed Maria Ele Chavoya and her daughter Itzel Mosqueda-Chavoya on Old River Road just south of Bear Mountain Boulevard. 

CHP said Ferguson crossed into the oncoming traffic lane while trying to pass a big rig and collided with the two women’s car killing them both.

According to court documents, Ferguson is a correctional officer at Taft Correctional Institute.

In those documents, officers say Ferguson was driving her vehicle at approximately 81 mph and reached speeds of 88 mph trying to pass a semi-truck Witnesses also described Ferguson driving at high speeds and passing other vehicles before the deadly crash.

Ferguson is due back in court in December.