A banned driver who did not call 999 when his girlfriend was fatally hurt in a crash has been jailed for life for her manslaughter.
Bennett drove at speeds of up to 90mph, the court heard
Kirsty Cash, 17, died after Andrew Bennett, 20, crashed a Subaru Impreza on the outskirts of Sheffield in April.
Sheffield Crown Court heard Miss Cash might have lived, but Bennett failed to call an ambulance for 45 minutes.
Bennett, from Sheffield, admitted manslaughter, perverting the course of justice and driving while disqualified.
He must spend four and a half years in jail before he can be considered for parole.
Prolific criminal record
His mother and two friends were sentenced to six months for conspiracy to pervert the course of justice.
Miss Cash's father Stanley called the sentences a "joke" adding: "I am prepared to hang for what I would do to all of them.
"They have still got their sons but I have lost my daughter."
The court heard Bennett had a prolific criminal record, was high on drink and drugs at the time of the crash and was driving at speeds reaching 90mph (145km/h).
Help was called only after Kirsty was taken away from the crash scene
The Subaru left the road, collided with a series of trees and then turned on its side and Kirsty Cash was thrown through the windscreen.
Kirsty was taken to Bennett's Sheffield home before an ambulance was called.
The delay probably led to her death, Sheffield Crown Court heard.
Bennett's mother Linda Bennett, 48, her partner Robin Scholes, 39, and a friend Steven Scott, 19, all admitted a charge of conspiracy to pervert the course of justice.
The Recorder of Sheffield Judge Alan Goldsack QC told Bennett: "When you found Kirsty seriously injured, you had no thought for anyone but yourself. You were determined to evade detection."
The judge said there was a good chance his girlfriend would have survived if he had sought medical help immediately.
He said Bennett posed a risk to the public and an indeterminate life sentence at a young offenders' institution was the right course of action.
He added: "In my judgment there is a significant risk that, without proper safeguards, you will again be tempted to drive a car.
"If a police car came up behind you, you would put your foot down to try to evade detection, with further serious consequences."