Courtney Goodwin-Diliberto, of Aldiss Drive, Kingston Bagpuize, was sentenced to five-and-a-half years in prison following a six day trial at Oxford Crown Court in May.
A jury unanimously found her guilty of causing death by dangerous driving at the same court on March 10.
The court, on June 19, confirmed she had been banned from driving for five years and six months, to run concurrently with her prison sentence.
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Goodwin-Diliberto, who had passed her driving test four months previously, was driving dangerously on the A415 Faringdon Road approaching Kingston Bagpuize on April 28. 2022.
She was travelling in convoy with her then-boyfriend, Ben Ireson, who was riding a motorbike and overtook her car.
The motorcyclist was approaching a bend in the road at the time and faced a head-on collision with a Royal Mail lorry that was travelling in the opposite direction.
Mr Ireson, 26, died at the scene despite Goodwin-Diliberto’s attempts to revive him.
Commenting after she was jailed, lead investigating officer Philip Hanham said: “Courtney Goodwin-Diliberto had only held her driving licence for four months before the collision.
“Her actions fell far below those of a competent, careful driver and show the devastation caused when driving dangerously.”