According to the probable cause statement, it happened near the 101-mile marker on Interstate 70 on February 23.
When deputies got to the scene, a man told them that his wife had taken a butcher knife from her purse when he was driving and lunged at their two children.
The man said she had a "mental status change," according to the PC statement.
The man said the woman, Jennifer Fangmann, 41, of Columbia, said, "Please forgive me," and "I can't let them take or hurt the kids."
The man, while still driving on I-70, was able to grab the knife to stop her from hurting the children. His hand was cut in the struggle.
He finally got the vehicle stopped and got the kids out.
The three sat on the side of the road until some good samaritans stopped to help.
When the people stopped, Fangmann got into the car and drove away.
Deputies spotted the car going west in the eastbound median of I-70.
The car kept driving in the median until it hit a culvert near the 111-mile marker.
Deputies said Fangmann got out of the car and tried to walk into traffic.
The deputies got ahold of her and arrested her before she was hurt.
A Facebook post from the Cooper County Sheriff said she was taken for a mental evaluation.
Woman charged for trying to stab her children in a car driving on I-70
A Columbia woman faces ten charges, accused of trying to kill her children.According to the probable cause statement, it happened near the 101-mile marker on In
