Missouri – Forty-two-year-old Kimberly Lightwine was charged with second-degree murder in the death of her 19-year-old son Austin Anderson, who was blind and autistic.

Police found her August 29 in a field lying about 20 feet away from her dead son, who was wearing a diaper. 

According to police reports, Austin Anderson died from dehydration and lack of his medication after being left in a field in Polk County, Mo., for an unspecified amount of time.

Lightwine told investigators she was high on drugs and had taken her son to the field, had pushed him through several fences to reach the area where he was found and had broken a leg in the process, court documents state. 

She said she remembered driving to the field.

According to the statement, she recalled telling her son to “get out of the vehicle and go reach for help”. “Put your hands in front of you for help, and God is going to take care of you'”. 

Her son had trouble walking, the statement said, but kept coming back to her saying “mom”. He may have been in the field for as long as three days. 

“I killed my son…I don’t remember why I was, just mad as. hell”. 

“I just kept thinking that God or somebody came and got him and took him where he need to be.”

When police asked why she wanted this to happen, she said because she was a “bad, destructive mother”.

Lightwine told the detective that her son couldn’t take care of himself without her care.

“He kept saying I want to go home mommy, I want to go home”, Lightwine said, according to the statement. “I want to go home, ‘” she told police.

Lightwine claimed not to know why she killed her son.

The son’s father was interviewed by a police a few days later, the statement said, and told them his son had a limited vocabulary and the mental capacity of an elementary school student.

 His unnamed father told police that Anderson required hydrocortisone medication.

The father said Lightwine had a violent temper. He recalled an incident in which Anderson kicked Lightwine and she reacted violently by grabbing him and cussing at him.

The man had on collapsed and shriveled adrenal gland and required hydrocortisone to compensate for this condition. 

Extended exposure to the elements on a hot day also was cited as a cause of death. The high temperatures on August 27, 28, and 29 were in the low 90s, with nightly lows about 71 and maximum relative humidity in the 90 percent range each day.

Lightwine has been charged with second-degree murder as well as second-degree elder abuse, a crime that includes acts against disabled adults, according to online court records.

Her bond is $250,000.

Lightwine is also facing a charge of elder abuse.