aaronessa keaton of phoenix was arrested and charged with manslaughter for a 2014 accident that resulted in the death of a 5-year-old child .
keaton , who was also on probation for marijuana possession charges at the time , was indicted by a grand jury in february , and taken in monday after she was pulled over for a traffic stop .
the other child in the car was in serious condition , but later made a full recovery , and both adults in the front seat suffered only minor injuries .