A mother involved in an Adelaide Hills car crash that killed her young son last month and injured two other children allegedly had methamphetamine in her system at the time.
The 34-year-old Callington woman was driving home from Victor Harbor after a family holiday when the silver station wagon hit a tree on Brookman Road at Kuitpo, near Meadows.
The crash happened on November 13 about 6:30am.
The woman's seven-year-old boy died at the scene, while his twin brother and two-year-old sister were taken to hospital along with their mother.
Police said the woman had since been arrested.
She has been charged with causing injury by dangerous driving and aggravated death by dangerous driving.
Police said the charge was aggravated because the woman had methamphetamine in her system when the crash happened.
The woman will appear in the Mount Barker Magistrates Court in March.
