Note how this People reporter describes when Terri comes home. She doesn't mention any venting, doesn't mention a poly, rather she says Terri barely spoke to Kaine, and went off to another part of the house. Is this when Terri came home from the third poly?
Even then, the tension between Kaine and Terri was clear. On the day of the interview in their home-where a 3-in. stack of Kyron flyers sits on a kitchen table and boxes of green rubber bracelets etched with the tip-line number rest on the floor
-Terri drove off with Kiara as Kaine sat down to talk. When she returned 90 minutes later, she and Kaine barely spoke before she went off to another part of the house while Kaine gave a tour of Kyron's bedroom.
http://www.people.com/people/archive/article/0,,20399962,00.html
Looks like only Desiree says Terri failed the third poly. Was Desiree at the house when Terri came home? The People reporter doesn't mention her (see above).
"Law enforcement didn't need to tell us," says Kyron's mother, Desiree Young. "She was very vocal about failing those polygraphs."
http://www.people.com/people/article/0,,20400681,00.html
Nope, looks like Desiree wasn't even there:
Kyron's mother, Desiree Young, who lives four hours away and spoke to PEOPLE by telephone.
http://www.people.com/people/archive/article/0,,20399962,00.html