Several years ago, after a particularly bad dumping (done over the phone I was atwork, no less), I watched the movie "Say Anything" and took to heart the advice of one of the minor characters, Joe. "You need to find a girl that looks exactly like her, nail her and dump her!". Genius.
In all seriousness, the relationship is effectively ended since she's so far away, and you're reduced to intermitent emails. There may be hope in the future if you find yourselves on the same continent, and it's pretty obvious to all of us here at TFP that she seems to still have feelings for you on some level. That said, you need to move into the here and now and find someone local that can make you happy. I guarantee that girl is out there if you're willing to expend the energy to find her. Good luck and keep us updated!