“I had spoken with Holly, my mother and her boyfriend, all that morning. And of course Clint didn't know any of this, so I knew her boyfriend wasn't here,” Karen Bobo said.
http://www.wreg.com/news/wreg-holly...-she-vanished-20110722,0,6800717.story?page=2
Maybe Karen Bobo “knew her boyfriend wasn’t here” because Holly was not home the night before.
What I find interesting is that Karen Bobo never states she actually
SAW Holly that morning. So she could have just as easily spoken to Holly on the phone, as she may have spoken to Drew on the phone that unfortunate morning.
The reason why Clint may not have known who was outside of the house, was because Holly may not have slept at home the night before. Maybe she came home that morning only to get her lunch, and was followed by the perp.
The MAIN question still remains: Who was the last person to see Holly before the morning of April 13th?
One of the bigger mysteries in this case is the timeline of calls between people connected to Holly.
JMO