You are complicating it and it will cost you, wanna sit around on your arse and wait for HER? If you do and it backfires and she goes for someone else because you did nothing, want to live with that?
It is very simple. Do you like her? Does she like you?
If yes on both, tell her that, take her out or show her more than "I am your friend". And then let the chips fall where they may. It either works or doesn't. If it doesn't at least you know and you can move on, if it does well then good for you.
People complicate it too much, with all these extra stuff that clouds rational thought. Don't live on IFs and MAYBEs. Take what you want, do anything to get it.