Ok this is very interesting. As I was looking at that vid she was looking at her right, the interviewers left. On this page, there is an interesting description of what happens when people look a certain way. And they use it from the person looking at them point of view.
http://www.blifaloo.com/info/lies_eyes.php
To the Left
Indicates: Auditory Constructed (Ac)
If you asked someone to "Try and create the highest the sound of the pitch possible in your head", this would be the direction their eyes moved in while thinking about the question as they "Auditorily Constructed" this this sound that they have never heard of.
The Gist of it...
How this information is used to detect lies:
Example: Let's say your child ask's you for a cookie, and you ask them "well, what did your mother say?" As they reply "Mom said... yes." they look to the left. This would indicate a made up answer as their eyes are showing a "constructed image or sound. Looking to the right would indicated a "remembered" voice or image, and thus would be telling the truth.