Barnes, from Baydon near Swindon, was also driving erratically when she hit and killed teacher Diane Wright in September 2010. Her car was crushed and she died at the scene.
Barnes is at Swindon Crown Court for her sentencing, having eventually pleaded guilty to dangerous driving after going on the run in Holland for 18 months.
More top news
The Napier case provides yet another window into a dark period of our recent past in relation to child protection.
A builder has been ordered to pay £2,500 for opening a sluice gate on the Somerset Levels at the height of the floods.
George Ford booted 24 points as Bath kept the pressure on Northampton at the top of the Premiership with a 39-16 win at rivals Gloucester.