English isn't my first language and the title is rubbish so excuse me for it.

I asked out a girl from my school (last friday), and after a long session of blushing and umm's on her part i got the yes.
The 'meeting' itself was a disaster in my honest opinion.
She was very nervous the whole time and quite honestly made me feel really uncomfortable (i still like her a lot though).
At the end of the date however she insisted we exchange phone numbers, but refused to exchange IM names excusing it with the fact that she doesn't use them much.

Ok, so i called her yesterday and asked if we'd meet up again today in school.
She agreed. Our chat was very brief (since neither of us had the time to just 'chitchat') and we agreed to go out again later this evening.
I did notice her following me around with her best GF all day, constantly smiling, staring (which she did prior the initial 'meeting') giggling and all the other girlish stuff.
Then suddenly i got a last minute text message of her saying she can't make it today, but suggested we meet up tomorrow and asked me if she can bring her GF and her GF's 'friend' with her.
I was extremely pissed off and flatout rejected the idea saying that i don't have the time tomorrow.


So, yeah help from the more experienced please.
Is she just that shy or am i being made a laughing stock?