He said he also told his best friend about the encounters.
Scott spoke with Barker, a mother of three, later that afternoon at the Fairmont detachment. She told him the boy "is like a little brother to her husband," according to the complaint.
She initially denied the allegations but then admitted to them. She told the officer the teen "has a flirting way about him."
She said it began with a text or an email and he would act like he was going to bed and she would follow him. Her husband and children were in bed when the incidents occurred, she said.
She told investigators they stopped "because they knew it was wrong" and she knew she could get into trouble. Barker told investigators she had never done anything with any other minors.
Barker said the guilt began to set in and she was embarrassed, regretful and worried.
"She said she does not think she has a problem that she needs help for," Scott wrote in the complaint. "It was just a lustful thing and the flesh gave in. The accused said the victim had a choice, too, but she should have been the adult about it."
Scott also spoke to the teen's mother, who said she was aware her son spent time at the Barker home. The woman told troopers she expected her son to be safe there.
She said she couldn't believe Barker "did this to her son and was very upset over the crime" after placing so much trust in the family.
A secretary at North Marion High School told a reporter that a lawyer had advised the school not to comment.
Andy Neptune, administrative assistant in the Marion County Schools personnel division, said Barker was a volunteer coach at the school.
"It is the policy of the Marion County School System to not comment on proceedings, particularly when it involves a personnel matter," Neptune said Tuesday afternoon.
Barker was released Tuesday on $15,000 bond secured by a bail bondsman, according to an assistant clerk in Marion Magistrate Court.
Contact writer Ashley B. Craig at ashley.cr...@dailymail.com or 304-348-4850.