I am really confused about this girl?

I am talking to this girl at work. We met for coffee and had a great time. We chatted for an hour and a half. I asked her if she wanted to go to a 2 hour art class. She thought it was a great idea. Yet, at the same time she is friendly but distant especially since our first get together. She greets me and at times she comes closer to me when we passes by me to greet me. When I messaged her about the tickets to the art class if she is still ok with it. She said cool what’s the day and time. Yeah, I do like her and she probably guessed that. Just uncertain why there is a friendly distancing (but always moving toward me) go on but at the same time looking forward for us to go into the class. Really confused.

Updates
1 y
To add more facts: During our coffee hang out, she told me she is quite introverted. She also told me, to my surprise, that she would like to hang out multiple times at coffee shops and record stores. We both like music. I went with the art class because she told me she likes to work with her hands and she likes art. I appreciate the advice given here.
I am really confused about this girl?
Post Opinion