[spoiler] I was really excited when the Keep came out. In my original Origins playthrough (didn't end up being my canon run), my city elf warden made the ultimate sacrifice after Alistair was all "gotta be king". I thought, "finally, I can make him a Warden and they can be together" NOPE. She is doomed to be alone unless I pair her with the Sebastian Hawke or something. [/spoilers]
Really? Is there a letter about that? It would make me so happy that finally one of my characters got a "happy" ending.
No way, really? I knew there was a reason I love Zevran. 
After I finished the finding the hero of Ferelden operation my quizzy got a letter from her.
It says that "Regardless, Zevran and I have our own battles to fight"
So I take it as they are fighting together.