It definitely sucks when girls cancel on you, it happens so dont beat yourself up too much. It may not be down to anything you did wrong.

Best thing you can do from here, move on and meet some new girls. Get in touch with her after Xmas if you still want to see her by then. Hopefully by that point you will have other options and you wont give her a second thought.

Take the positives, your first # close. Learn from it.