The girl, who cannot be named due to her age, was charged following an incident in Bromley on October 4.
She attended Bromley Magistrates’ Court with her parent/guardian and pleaded guilty to assault and criminal damage.
The court heard she caused £800 of damage to the window of Head 2 Toe Barbers on the High Street and assaulted a male.
On December 10 the court ordered the girl’s parent/guardian to pay £200 compensation and the girl was referred to a youth offender panel.
These are panels where local people work with young people to help them take responsibility for their actions and to change their behaviour.