<human>: Can you condense the text into a few key points?

Went on a date with a girl 2 weeks ago, date went great, asked her at the end if she'd like to hang out again the following week and she said she'd try and make it but was really busy at the moment (she is 100% legitimately super busy with life at the moment) and would let me know. She messaged me after the date telling me she had a great time. 

Spoke closer to the second date and she said she wasn't sure she could make it but lets hang out again in a week. Spoke again a week later chatted then asked her out again and she said she had school until tuesday (the tuesday just gone) but would be free after that. Texts were always loaded with exclamation marks and emoticons and interest was obvious. 

Messaged her yesterday and she was like a different person, she used to reply in a normal amount of time (usually within an hour) and was now taking hours to reply, thought I'll give it one last shot, asked if she'd like to go out again this week, that was 5 hours ago and haven't got a reply yet. It's like her interest switch just flicked off, and I deliberately waited almost a week between asking her out this time and almost a week last time as well so that I didn't come across as needy. 

If she wasn't interested she could have easily said long ago something like "I don't know when I'll be free I'll let you know" rather than constantly letting me know when she's free or when we should try again. It's driving me up the wall I am insanely into this girl and this feels far more crushing than if I had've just been told a few weeks ago that she wasn't into me or that she'll let me know, Especially when the date went so well. 

I figure I might be a victim of circumstance and that having not seen her in so long attraction might've faded but Its just so annoying why can't she just be more clear.
<bot>: girl keeps postponing second date despite acting interested, why cant she just say "NO" or that she'll let me know.