Dude, she said that she can't see you guys dating. That's your answer. If you have any chance left, it can only be realized if you bluntly tell her what you want. You don't know it isn't going to work, you haven't tried it.
But to be honest, it's not going to happen and you should move on. You see, what you're attempting is known as a ladder jump, and can be explained far better than I by the wise man at
http://www.intellectualwhores.com/masterladder.html