Yes, I found it. There is an article here, along with an MP3 (the audio of which is so low, I can barely hear it on my computer).
http://www.oregonlive.com/portland/index.ssf/2010/07/day_of_kyron_hormans_disappear.html
This is what I heard:
At about 18:00 minutes + into the interview
I could not hear the question. But, they had been talking about K and the answer was:
Kaine: "Her demeanor, she's a new kid. She's a whole new kid.
Desiree:"Yeah, she is."
Hard to know what time period he was comparing her demeanor to, but since Kyron had been missing for 3 + weeks at the time he spirited her away from her home, I would think that those 3 weeks in particular were probably fairly chaotic, and at the very least unusual, not the normal routine for anyone in the household. So, I don't place a whole lot of meaningful anything on his observation or conclusion unless I knew much more. In addition, had Desiree spent alot of time with baby K? How would she know?