Sounds like a nice evening. It is always good to have conversation where both parties are interested in hearing the other. I miss that too.
As Jo said, don't worry too much about this story. And your ex is an individual, she has softened to your approach many times. As for her being stubborn enough never to come back, who nows? I for one, won't believe for a second, that women are more stubburn than men when it comes to leaving. I think it's equal, depending on the circumstances.
Detach from her sitch (as you are doing) and enjoy your life. Your ex may just have a lot on her mind that has nothing to do w/you! T
