Does she seem interested in me at all?

Ok, so about two months ago I gave this girl some compositions that I put on a CD that I made for her. The next day after she listened to them she said she really liked them, and she even called me a genius. When I asked for her e-mail so I could send her more compositions she gave me her Facebook instead. We will talk on Facebook for some time, but it seems like I'm always initiating the conversation. Anyways, she has asked me to help with some things like teach her piano or how a rhythm goes. She invited me to come with her to this church thing, and we both seem to have a great time every time we go. When she sees me there she will approach me with a big smile. Sometimes I'll catch her looking at me and even mimic some of the things I do while talking to her. One of her friends even pointed out her mimicking me and she started getting embarrassed. When I sit next to her she always seems to preen herself and keep crossing her legs. She said she'd help me bake a cake at her house, but that was like a month ago, and we still haven't done anything with a cake, so I'm not really sure what happened there. Also during lunch, I will be in the band room, and sometimes she will show up there and start playing music. One time she asked if she could watch me play piano. When we are talking in a group of people she doesn't seem focused on me, but every time she laughs she looks at me. She will sometimes look me in the eye while we are talking then look down then look back up at me...when she was talking to one of her friends she started laughing and her face was turning red and she looked at me as did her friend...then one day she asked for my phone and she gave me her number and said, "If you ever need a ride, call me." So, i'm not sure...does she seem interested?