"When I read the news, I found out he was still married and his wife was 15 weeks pregnant," she told the Denver Post. "I thought, 'If he was able to lie to me and hide something that big, what else was he lying about?'"
Kessinger said Watts did not show any emotion during their last conversations and tried to change the subject away from his missing family.
“It seemed off,” she said. “It got to a point that he was telling me so many lies that I eventually told him that I did not want to speak to him again until his family was found.”
She called the sheriff and met with FBI investigators. Watts was arrested later that night.
“I don’t think there is a logical explanation for what he did,” Kessinger said. “It’s a senseless act, and it’s horrific.”
The case has gotten a lot of attention in North Carolina because Shannan Watts grew up there. She and Chris were married in Mecklenburg County.
Chris Watts pleaded guilty to the murders last week and will be sentenced to life in prison on Monday if the judge accepts his plea deal.