Does she like me more than a friend?

There is this girl I have known for about a year. She and I have been talking on and off for a couple of months. We started talking after she did a game on Facebook and she told me that she thought I was hilarious and creeps my facebook page sometimes. She lives about an hour away from me, but Sunday I mentioned that should she come down and visit me and she came down Monday. We hung out and talked while we were riding around out in the country. She laughed at most of the stuff I would say. I noticed she would look at me alot, especially when she was talking, but that could be that she didn't know any of my friends. We are always chatting on Facebook and she usually comments on my status updates talking about how random I am. When I have service she will sometimes text me. She asked when I was going back to school and mentioned that she was going to be up there a few days this summer for a leadership camp. Tuesday on Facebook she commented on one of my status bringing up an inside joke from Monday. I think she likes me, but I want a second opinion. On Wednesday I asked her what she was doing today(Friday) and asked if she wanted to go bowling. She mentioned how she was terrible at bowling, but said ok. I think she likes me, but should I wait a little while longer to ask her. This will only by the second time in the past year I have seen her in person.