If a girl purposely gives really ambiguous answers to general questions like "where are you from?" or "what do you do?" and creates a vibe like "I'm too good to tell you", how should you respond?

It almost sounds like shes trying to game you. Personally, id go with a few negs, nock her down a few pegs but thats just me. Maybe you're asking the wrong questions, things like "where are you from" are a dime a dozen and she most likely gets those questions from almost everone she meets. Id suggest asking her something obscure or even a bit strange, something that she hasnt been asked before. Even if it doesnt work at least she'll remember you as the guy who asks crazy questions which could be a good starting point for round 2 as you've already made an impression, she'll remember it and you.

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she is just not interested because you haven't build enough attraction
you went straight to comfort, why would she want to build comfort with you
I think you have a problem with A1&A2 ,If so just go direct with a good opener
here is an opener I made on the spot
7sins: Hey I really like your style, it reminds me of someone famous
HB:Who is that?
7sins: actually of 2 Marilyn Monroe and Coco Chanel it's sexy and classy and that's very rare to find this days
HB:thank you, what is your name?
bla bla bla
Later that night I got to third third base but I filled to F-close