I have done this quest many times and it is by far the best farmable quest in the game. One thing I wish to know though is this:

I have seen her appear in 3 places (I am assuming it is faction-based as for me, an AD player, it's Greenshade, Malabal Tor, and Reaper's March) and each place requests different Laundered Treasures so I horde the White Treasures I get from the containers I get from Tip Board quests to provide the goods needed for this quest. Can anyone confirm if she appears in more than 3 zones for you? If my above hunch is correct then EP should be Shadowfen, Eastmarch, and The Rift and DC should be Rivenspire, Alik'r Desert, and Bangkorai so confirmation on anything beyond these would be nice so I know what I need to keep and what I don't need to keep.