Althea Ebonlocke was killed during the Assassination Rogue Artefact acquisition quest in Legion. During the pre-event, she is however still in Darkshire next to the quest giver for the pre-event.
I think this is more the case of timeline issues. The zone is for the original levelling, the new quests haven’t phased any zone they have just been put in that zone.
Yes, I get that. But for the sake of consistency - which seems to be a reason why they reworke the leveling experience - wouldn’t it make sense to remove her for max level players?
She is still there on the live patch