Maybe she also is busy with family things, it is offcourse the holiday season.. ? I've had something quite similar not too long ago. I met this girl in the pub and got the accompanying phone number So the next day i text her, you know how it goes. During the following week I texted her a lot, like 200 times a day. On thursday I picked her up from school (otherwise she'd be waiting for the bus in the rain for 30 minutes). Upon arrival we had some intimate moments It was really going nicely and i definately had the butterflies in the belly.
Then over the course of two weeks we went out three times and saw eachother a couple of more times. For some reason her attitude seemed to get a bit colder over the course of it, not texting back anymore and after a while no contact at all anymore !
I'm confused and disappointed as well, even felt a little down for a few days. I guess the best thing is to let it rest and if she is still interested, i guess i'll hear from her again some day..