In a fantasy life, I could see us separating and her suddenly finding that she was attracted to me, and we rekindle things. But the real world doesn't work like that too often.
Oh YES it does...
The DUMPER and the one who cares the least almost ALWAYS has the dumpee chasing them, begging them, hoping, praying, changing, and doing everything in their power to save the relationship...
Be the dumper... That has been your key for this whole time. You will then find out how she really feels for you. You will never find out her true feelings until you do. (as your story indicates and proves)