Hey guys, help appreciated.
I went to this party last weekend in which I met a very cute girl and spent a couple hours talking to her. We almost kissed but the moment was gone so we only cuddled.
She gave me an item to 'keep until our next meeting' and her phone number without me even asking. I walked her to the bus stop like a gentleman and texted asking if she got home safe. To which she replied straight away asking if I still have that item she gave me.
We briefly talked on Facebook late the next night but I felt that didn't go so well, she was quite unresponsive and seemed 'unimpressed' in general.
I texted her the next day asking if I could take her out to coffee or something later in the week. She said she had a busy week but we can try again next week. Big warning sign, but we did keep chatting a little bit over email.
On Friday that week I happen to have gotten invited to the VIP area in a pretty cool night club in town. So I emailed her inviting her if she wants to come. She said she'd love to but has a dinner party. I said no worries and was about to leave when she asked how many tickets I could get for her and her friends if she could make it. I didn't reply to that, but she texted me later on saying she definitely couldn't make it and that she's sorry. I texted asking if she was going to make it up to me. She said 'sounds like I owe you

' which I'm assuming was said in a negative tone...
Anyway, couple of days later I text her asking how was her weekend and that I know Friday was late notice and hopefully I can still see her next week? (this week).
She ignores the question but says she had a good weekend and asked me how mine was. Turns out she plays a musical instrument that a friend of mine plays professionally in an orchestra and she asked if I get free tickets. I said I could get her and her friends really cheap tickets if she was interested to which she replied 'good deal'.
That's it so far.
I'm confused. She can't be keen on meeting up because she's not initiating anything or making it easier on me to set up something, but she is replying and generally seems talkative. Is it just her friendly personality? Should I give it up?
I would gladly just leave it alone if she didn't stay inside my head ever since that beautiful night almost weeks ago, when she was obviously into me.
I'm wondering what anyone thinks about this?
Thanks,
Mr. Serious