Yes, I have gone through entire Erika's dialogue tree lots of times. It isnt that very start of the conversation, cause I went to her for the first time around defeating grah-hoth.
On quest list excluding slay the emperor, I have the wisdom of khoth ( I didnt go to Claudette to end this quest); chevyn's ring, alexi's message and some less significant quests - basilisk hunt, sugar, picks and shovels, mushroom meal and bounty rat nest.