trying to figure out the "how are you" awkwardness. Did she say "how are you?" and you replied "How are you?" Or did you ask the question twice because she ignored it the first time?
Anyway, find out what she's into and talk to her about that. Is she a bookish girl who may share her discussions about schoolwork with you? (OMG, how did you go with that English assignment?) Is she a sporting type? (You've got that meet coming up soon?). Indie chick who likes music (are you going to that upcoming concert of X?) Is she into any fandoms (have you seen the latest Dr Who yet?) Follow my drift?
Edited to add: The thing you talk to her about - try and find a mutual interest. That way you can ensure the conversation can continue for a bit. Nothing worse than raising a conversation and then looking like a dufus because you don't know much about it. I tried that when making small talk with an acquaintance who's into politics when we were at a party once. Sadly, he does satire of politics as a living and I know nothing much about it - so I just looked dumb.
Last edited by basilandthyme; 04-05-13 at 03:56 PM.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.