Why Can't I Fly In Azeroth?

Everything was going pretty good, I got Breeonna to 85 and started working on Brieanna. Everything was fine for a little while, then I lost the ability to fly in Azeroth. I can fly on all my other toons, just not Brieanna. Needless to say, that is putting a damper on my ability to quest. Brieanna is 82 and should be questing in Deepholm. I did all the quests there that I can from the ground but you need to be able to fly to get up on the shelfs for the other quests.I have had a ticket in for 2 d

World of Warkraft...