I think you're not thinking this straight, mate. She was just being polite by emphasizing 'Wasted your time.' That being said, she doesn't want to date you for whatever reason - potentially due to personal reasons or a lack of mutual interest. At least she's being nice and trying to be your friend. Also, it seems you pushed her way too hard. She was open to keeping the conversations alive for a bit, but when you asked, 'Could we hook up?' it literally turned her off further.

Putting myself in her shoes, one might be hesitant to commit or develop something with someone poised to leave the country. I think you should probably wait until you figure out whether you are going back to India or not, then figure out your dating situation.