Police alleged the girl stopped her automotive on the North South Motorway at Wingfield earlier than 11.30pm and took her two younger youngsters out of the automotive, then stabbed them with a knife.
A person who was driving previous stopped on the motorway and intervened, taking the knife from the girl.
Different members of the general public then additionally stopped to assist and restrained the girl till police arrived.
The 2 younger youngsters from Modbury Heights, have been taken to the Girls's and Youngsters's Hospital by SAAS, the place they have been handled for essential accidents.
They're nonetheless in hospital in a steady situation.
The lady, a 35-year-old from Modbury Heights, was arrested and brought to Royal Adelaide Hospital underneath police guard.
Police have mentioned she's going to doubtless be charged with two counts of tried homicide.
Anybody who could have witnessed the incident and has not already spoken to police is urged to contact them.