A month ago, I decided (spontaneously) to visit a girl I had been talking to for a year.?

I met her at a retreat and we seemed to get along well. I was, and still am, mad for this girl. I called her up about 5 days before I even thought of visiting. Lucky for me I found out what she was doing for the weekend (nothing). A day before the journey began, a friend in a nearby dorm room said he was going back home, which just so happened to be near where this girl lived. He pressed the issue and I decided to go. The next day we leave. 500 miles and 7 and a half hours later, I call the girl. I tell her where I am and she is ecstatic, as am I for the reaction. I asked her if she was free the next day and she agreed, but she said she had to visit her relative. She ured me she'd be back in time. The next day comes, and I'm shaking with excitement and nerves. I get no phone call, and she doesn't answer mine. I never saw her. We haven't spoken outside of facebook. I still have feelings for her. I want to call, but am too unsure of what to say. What do I do about this?