Both myself and a friend applied for a promotion. I got the job. Do I owe her an apology?

I don't think you owe her an apology, you got the position fair and square and she really shouldn't be upset at YOU for that. I understand her being disappointed by the situation though. I would give her a call and ask how she's doing but I would avoid the subject about the position unless she brings it up herself. If she's still giving you the cold shoulder then I think it will merit a more serious discussion (especially since you two work together) but cross that bridge when you come to it. Hopefully she just needs a little time before this blows over.

You have nothing to apologize for. Call her before the next staff meeting to make sure she knows when it is, and also chat a bit.

Sure you should call her. You're already worried about how she is feeling.. so dial the phone!!

Let her know just how much you value her as a friend and how lost you would be without your "top journalist"! Let her know that her views and contributions are important to you.. and hey.. pass on a little prestige and give her some special assignments and really juicy leads!!

Try to comfort her by going out for coffee or inviting her over. After that, just make conversation with her, and then tell her that you're sorry she didn't make it, and that you don't want it to ruin your friendship.

Good luck with everything...:)