Molly Mycroft, 21, was driving her Seat Ibiza at 78mph in a 40mph zone when she ploughed into a BMW, killing Sarah Oliver, 20, who was a passenger in the BMW, and leaving two others seriously injured.

A court heard Mycroft ignored a traffic light which had been on red for six seconds when the smash happened in Doncaster, South Yorkshire, in August 2022. Footage obtained by police also showed her on her mobile phone laughing and joking while music blared in the car before the fatal collision.

Mycroft has now been jailed for nine years and disqualified from driving for 16 years at Sheffield Crown Court after pleading guilty to causing death by dangerous driving and seriously injuring the two passengers.

In a statement, Sarah Oliver’s family said she was missed daily. They said: “She was a beautiful young woman with her whole life ahead of her. Sarah could light up a room.

“She loved spending time with her family and was looking forward to travelling and becoming a Godmother to her best friend’s baby this summer.

“She died six days before her 21st birthday, and while we should have been planning celebrations, we were instead planning a funeral; her life and our lives were taken away from us by selfish actions.”

Sergeant John Taylor of South Yorkshire Police’s Serious Collisions Investigations Unit said: “No family should have to go through what we have endured. This is a tragic case.

“The actions of Mycroft showed no regard for the safety of others and resulted in the death of Sarah and two other motorists sustaining serious injuries.”

“We know Mycroft was using her mobile phone whilst driving and was speeding at the time of the collision. I urge people to consider the consequences of these actions.”