Does she like me/what should I do?

[Austin]

I've never been good at reading the signs, but this is something I've never seen. I met this girl like two weeks ago, and we've been texting pretty consistently for a week. When school started, we pretty much hung out every day there. I thought it was going really well. We had like a "first date" type of thing, and she seemed pretty happy when I asked her out, and the date itself went well. But the past two days, though she has kinda stopped texting me in the middle of a conversation. I thought maybe she was busy or her phone died or whatever, but then I'd see she posted something on twitter. Tomorrow is supposed to be like our second date I guess you could say, and again she seemed really happy when I asked her out. I have a pretty solid plan for what we're going to do tomorrow, but I can't help but worry about what's happened the past two days. Tonight she posted on twitter "wishing i was somewhere with you", and this was after she stopped texting me. I thought I was getting all the right signs, she texts me first, she meets up with me in school, we have good conversations, she's always happy and willing to hang out, but I just don't know how she feels. Any thoughts? Oh, and I'm planning on either making a move or telling her how I feel tomorrow night depending on how the night goes. Is that a good idea for the situation?
Just to mention, she canceled on me today, and I couldn't tell if she was just making up excuses or what. I just don't get it, things were so great. Any insight on what's going on would be greatly appreciated.

[BIG DADDY COOL]

Yes, ask her out