I get the idea, be cool, be yourself. I'm going to put in effort as well,
Still, my heart raises everytime I think about asking her to be my girlfriend, but isn't that something you just ask along the way / at the end of the date. I mean usually you would go on more dates, but I have this feeling she's waiting for me to ask it but still in doubt because we were good friends before, nothing more than that and her friends might think a little different about it (at first). Maybe she's struggeling with that idea.