What should I do? Second date?

Background info:About a month back, I met this girl at a that we both were attending for extra credit in school. We hit off, and I got her facebook and cell number. The next day, I asked her if she wanted to see a movie, and when the weekend rolled around, we ended up driving to the movie theater, walked around and talked before eating lunch, and then watching “Slumdog Millionaire”. We walked home, and while I waited for my father to come pick me up, we chatted for a bit, and when I was going out to door, she hugged me and said that she had had a good time.

Back to the present: she’s been very busy, and the only way we’ve been able to get in contact with each other is through facebook and texting. I’ve tried multiple times to get a second date with her, but other things have cropped up every time: old friend is visiting from chicago, father not letting her go, simply being too busy with track and schoolwork.

I live approximatly a 30 minute drive away from her, and we’re both 16.

Today, I asked if she was going to be busy next weekend, and she said that she’ll probably be open for something short on sunday before saying that she had to go to bed.

We haven’t decided on what to do yet, can you guys give any insight into what I should do next?

one more thing: I don’t have a drivers permit/license yet, so my father had to drive.