After reading the first post in this thread, I thought:
"If she was really into you, would she want to meet up?"
Of course. She would do anything to make it so. Refer the RT quote in my sig.
Don't fall into the trap of thinking that so called "quality" girls will not give it up the first time.
Your "quality" girl is the same girl who gave it first time to the hot spanish guy she met on her holiday or whatever. Happens all the time.
"Quality" girls who have been in relationships for 6 years or more, or married have given it up for me (and countless other guys) within a couple of times of meeting (or the first time) since it all comes down to attraction, not logic.
Simply put, it was a case of only medium interest. Unfortunately you couldn't amplify the attraction (for whatever reason, doesn't matter) and then made it even worse by calling her out on it.
We've all done the same in the past, but here is a great post explaining why it is a waste of time calling her out:
http://www.sosuave.net/forum/showthread.php?t=176859
Worth reading.