She is the wife of the youth minister at the church where she met the victim, according to police.
She joked with Colbert that she was ready to open her own windows and shop at Target.
Three dogs were put down last week with more than 100 more being quarantined.
Supporters of the governor received an email asking “Are you ready for a fight?”
He said his heart goes out to her friends and family.
Officials stated that the person was shot and pronounced deceased at the scene.
Investigators believe the mother shot her two children and then started a fire in the home before taking her own life.
The move comes a week after McMillin texted multiple people stating that his cellphone had been stolen.