A 17-year-old female faces additional charges in connection with a fatal crash that killed two Saskatoon teens Monday evening.

The girl, who police say was a passenger in a stolen truck that collided with the vehicle carrying the teens who died, will appear in court Thursday to face six more charges including two counts of being a party to the offence of dangerously operating a motor vehicle while evading police causing death and two charges of being a party to criminal negligence causing death. She also faces one count for being a party to the offence of criminal negligence causing bodily harm and one count for being a party to the dangerous operation of a motor vehicle while evading police causing bodily harm.

The youth originally faced three charges including possession of stolen property and breach of undertaking. The Youth Criminal Justice Act prevents publication of her name.

The woman accused of driving the truck, Cheyann Chrystal Peeteetuce, 21, faces 14 charges including impaired driving causing death, impaired driving causing bodily harm, flight causing death, dangerous operation of a motor vehicle causing death, and criminal negligence causing death.

Peeteetuce is also charged with possession of stolen property and breach of probation.

Police say a stolen pickup truck sped through the intersection of 22nd Street West and Avenue M Monday night and crashed into two other vehicles. One of them, a car, was pushed on its side and into the wall of a medical clinic.

Two 17-year-olds in the car, a boy and a girl, were killed. A 16-year-old girl who was also in the car was taken to hospital with life-threatening injuries.

Both Peeteetuce and the charged youth appeared in court Thursday. Peeteetuce was remanded until May 15. The youth was remanded until May 13.