Man, that sucks.
I dont like giving people advice on their life (i have enough trouble organising my own), and i dont know if you wanted replies or just wanted to empty your sadness / frustration, but perhaps giving her that time "away", if she decides she MUST leave for a while, kindly suggest that you see each other for a short period every few days (at church / a movie / a meal) just to spend some time with each other and try and work things out.
Good luck.
