I finally got to the quest, and got around to doing it, and I've found I can't complete it. Both merchants show "ready for pick up" in the quest log, but when I go to the merchants, there is no option to pick up whatever item she ordered. I've gone both with and without Viv, to see if that changed anything, and it didn't. I'm not sure what I could doing wrong, so I'm posting this as a possible bug.