((((anony)))) I know how hard it can be to say goodbye to those in your life that you love. And i'm not going to lie it is going to be difficult for the first little while, but eventually things will ease. If you are as close as you are with your sister as it seems, then distance is not going to change your relationship. Keep her close to your heart, for she can never leave there.
Is there any way that you will be able to be in some sort of contact with her? If not .. well it make sound a little out there, but whenever i miss those people in my life that i love, i sit down on my computer and write a letter to them. Of course i never send it, but it helps to write as if you were talking to them. That way, even though you may not physically be able to express how you are feeling to them, you can still get some of your feelings out so you are not so alone.
Hang in there, and know that you can do this.
Jacq