Wii: When I first started dating Josh (and yes - it was definitely "DATING") I wanted to know where we were going. I remember mentioning this to a friend who just about slapped me. "Neither of you knows where it is going - you just have to wait and see".
We never saw each other more than once a week. Talked on the phone twice a week and emailed maybe once a day. And it worked!
I have to ask why you are driving her to work or worrying about her taking the bus. You have just started being her friend. She was independent before she met you. Stop enabling! Stop taking care of her. Or you will never know if she is just being nice because you're being nice.
My advice: back off a bit. Don't pressure. Be patient. Wait and see.