Why can't I get this quest?

I wanted to farm the quest "battle of turai's procession" however I need to do the quest total corruption. I see mirza veldrunner in turai's procession but she does not offer any quests. It says I need to have Crossing the desolation, but I did that quest because it was part of the storyline. So am I screwed in getting this guest? If I am, then it is dumb of a-net to put a quest in that I can only on another quest.

Thank you for your time.

You have to do this first:

http://gw.gamewikis.org/wiki/Total_Corruption

KANE

Yes, I know I need to do that quest. However, THAT is the quest I cannot get, and is why I made this thread.

Wiki says I need crossing the desolation quest but I already did it because it is part of the storyline which I finished.

Also, if you tell me I need another quest from Mirza Veldrunner I cant get it because he/she does not offer me any quests. Also I have Zhed in my party so that doesnt change anything.

Edit: I figured it out I have to complete like 5-6 quests before that start at zhed in the command post. Mods please close this thread.