I think you just need to stop talking with her and work on moving on with your life. If you two bump into each other in a few years and she's pulled her head out of her ass romantically speaking, then hey give it a shot. But you deserve far better than to wait around seeing if she'll wise up and come running back.
"Well, then," the Cat went on, "you see a dog growls when it's angry, and wags its tail when it's pleased. Now I growl when I'm pleased, and wag my tail when I'm angry. Therefore I'm mad."