Sounds like you really climbed pretty high up that friends ladder, my man. The saddest part about your story is that you are about as alone in this as a group of prepubescent Asian kids at Comic Con. Many a good man has been put under the bridge by a woman.
That being said, it looks like you’re in no man’s land. We all know you’re not going to pretend as if nothing happened and behave as if you are content with being just friends—guys have too much pride than that. And pleading your case will be ineffectual—she already told you how she feels, so any further pressure from you will only invite frustration or even hostility. The interesting caveat is how she says she feels about you may differ from how she actually feels about you. What I mean is that the fairer sex, particularly those with less miles on the tires, are famously awful at deciding what they really want.
So, where does that leave you? Back to the wall, ashy knuckles, that’s where. As tough as it may seem to cut her loose, that’s really your only option. In a best case scenario, she’ll realize that she’s in jeopardy of losing something real and come running back. Worst case scenario, you’re out a friend. It’s a tough world, brotha, and I wish you luck on this one, because there’s really no guessing how it’ll all turn out.