TheWoWDBNext to Collector Kojo, there is a small "Memory Pylon", interact with it after you have killed the Matriarch and retrieved the Memory Core. Then you can turn in the quest.
Quest
The Fate of Professor Elryna
A World of Warcraft quest in Nazjatar. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
Hmmm, only saw some of what she was saying and no sign of the General. An she didn't go away. Bugged?
F
Quest facts
LevelLevel 50
ZoneNazjatar
Quest ID56143
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(56143))
Description
From the looks of it, Elryna's story should have a very interesting end. This pylon here has been acting up, but I think I know why! These things use memory cores, little crystals found within the center of the orb. I bet there's one in that old magi tower. There's a snapdragon that's bigger than the terrormaws in there so here, keep the scroll for now. It should help in your fight. She's a big one!
Community notes from Wowhead · 13 comments
Top 3 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
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Reward details
Reputation: Tortollan Seekers +75
Traversing the world, the Tortollan Seekers wield their immense wealth to catalogue and preserve forbidden knowledge.
Reputation group: Battle for Azeroth.
Other quests in Nazjatar that reward Tortollan Seekers reputation: Legacy of Nar'anan (+75), Snap Back (+75).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.