A grieving mother has made an emotional plea to a mystery motorist linked to the crash that killed her teenage daughter.
Courtney Hagley, 16, died when her car hit a tree near Palmerston North on Monday. It is believed she swerved to avoid a vehicle driving towards her on a narrow country road.
Her mother, Mary Hagley, has appealed for the driver of the other vehicle to come forward, saying she needs to know the full details of what caused her "nana driver" daughter to crash.
"Do the right thing and come forward and ... at least explain what actually happened," Ms Hagley said yesterday.
Courtney's boyfriend, 16-year-old Rex Stanbra, was in the passenger seat when their car crashed on Bainesse Rd at Rangiotu, shortly after 9am.