A girl accused of killing her best friend in a car accident has been found guilty of attacking a mother who branded her a murderer.

Georgia Marney, 18, of New Addington, smashed the window of a car and started brawling with Taryn Price, 20, kicking her mother Tracey in the head when she tried to separate them on October 5 last year.

The mother and daughter were visiting Taryn’s boyfriend Jason Stevens, who had lost his 17-year-old sister in a car accident in August.

The trio spotted Marney walking down Cudham Drive. She has been banned from the road pending a court case this year.

The women decided to leave and told Jason to return to the house.

Tracey Price told Croydon Youth Court that as she was driving towards Marney she shouted at her out the window of her car.

She said: “I said ‘What the hell are you doing here, you are not supposed to be here’.

“I did call her a murderer, which I should not have done. She was shouting rubbish at us, f-ing and blinding.”

The mother said as she was waiting at the end of Cudham Drive, Marney walked towards the car.

She said: “Taryn told me to lock the doors and call the police. [Georgia] punched the window three times and on the third time it shattered.”

She said it cost £120 to fix the damage.

Taryn told magistrates she jumped out the car to protect her mother, whom she feared Marney would punch.

She said: “We grabbed each other’s hair and started fighting on the floor.”

She also admitted calling the teenager a murderer, saying she was upset at seeing her in Cudham Drive.

Tracey Price said: “Georgia was on top of Taryn and her hair was wrapped around her fingers and she was kneeing her in the chin.”

She went over and stood on the 18-year-old’s hair so her daughter could escape.

As her daughter got up to collect her phone from the middle of the road, Marney kicked Tracey Price in the face, breaking her glasses and leaving a cut above her eyebrow.

She received hospital treatment.

Marney denied kicking Tracey Price, claiming she was attacked by the pair, and said she did not know how the car window got smashed.

Magistrates found Marney guilty of assault and damaging the car.

She is due to be sentenced in April.