วีดีโอ

The way you "solved" Orvas Dren's approval was completely idiotic. Though arguably a criminal linchpin, he is a cool guy and there's no reason he deserves to die. We know that he hates the empire and has made some deal with the sixth house to that end. If you just bribe him to raise (or have already by some unlikely coincidence) his trust and disposition high enough a fourth dialog option appears, "to drive the empire out of morrowind and defeat dagoth ur", on choosing which he does a short introspective talk and agrees to support you (the other two ladies under his umbrella in that case as well). Also no idea why every other idiot player keep killing all scribs, the poor creatures are completely harmless and unaggressive unless you hit them first. Save the scribs, save nirn!

In Ilunibi, Dagoth's lair, you missed a few very good items. Look just behind the boxes with loot, on the ground...

You couldn't steal the key from Therana because you likely need a high level Sneak skill for that, along with some more agility and luck. No other way to get it for now because you cannot kill her atm - you need her vote in the Main Quest and she is also an interesting Telvanni faction quest giver, come back either after finishing all of those or after you train sneak I guess to at least around 60-70 and some more luck for good measure.