She's the potential focus in the investigation for these reasons:
1. She is the primary caregiver of this child, whose last ride to school wasn't on a school bus but purportedly in her vehicle.
2. She is the mother in a blended family....a child from a previous marriage for her, a child from a previous marriage for her husband, and a child they've made together.
3. Her child has recently been sent to live with her parents.
4. His child has an energy-sucking project due to present at school and she has that responsibility to make sure it's set up and he's prepared.
5. We know nothing other than what we've been told: She was the last one to see Kyron ALIVE. That leaves us to conclude that after she saw him alive, he was no longer alive. I choose not to fall into that solipsism. What we know is not what LE knows. There is a piece missing here, and it is in LE's grasp, and I'm comfortable with it being there instead of in our hands.
6. This case is "isolated" and other children are not "at risk" leaving one to conclude safely that this is a familiar person who has done this. Is it Terri? I don't know. What I DO know is that LE cannot make an outright accusation without proof, and in this instance, they are going about 'proof-gathering' in a way that baffles.
7. The truck/Mustang Kaine owns/Terri owns thing.....is bothersome. What does it mean? Does the flier which states Terri drove the that morning state the truth? Does that mean that's what Terri says and it doesn't match the evidence they speak of? Did she really drive the Mustang and says she drove the truck? To what end would she do that????
All of these questions, and so many more, are the reasons I see that they have her as the focus of the potential focus of an investigation.