You're right. She's just shy. I actually enjoyed this video because for ONCE it seemed like a south asian escort was actually enjoying herself. Makes a nice change from all the bored faces you see on these types of videos (asianstreetmeat - for example!)
Actually, she's not bored. That's just her way of taking and reacting to sex. Considering how naturally reserved she is, she's actually showing alot of excitement. Take my word for it. I'm 63 years young and I've known several girls just like her -- quiet on the outside but going crazy and begging for it on the inside. Get to know them long enough and usually they finally start to turn out. MMMMMM!!! =))))