Yeah, I thought making a move wouldn´t be smart with her arms crossed, so about the 3 points you made:
1) We were at the movies, so if she was bored, probably wasn´t my fault but the movies´lol.
2) She knows me because we went to school together, we talked a lot in a club on a trip, and she texted me more than I texted her and she texted stuff like: "you are one of the funniest guys I´ve known and you make me laugh and I hope we go to university together". (we just finished high school, but didn´t really talked a lot, different classrooms)
3) I think this would be the most likely, because she always was kind of shy, and she has very over protective parents and stuff like that.
Before the movies we talked about where we were going to university, and she was telling me about some guys of my ex-classroom that asked her out and she turned down, and we talked a little about how Pixar was better than Dreamworks.
I think I won´t ask her out again because I really wasn´t enjoying myself

but I would really like to know if all girls are like that in the movies and what´s the best way to make a move. I would appreciate any advice.