I found if i approached very slowly by tapping forward while walking, I could get into range of her to complete the quest. Try talking to her on her right side, that seems to be the area you can get closest too.
Quest
The Wavespeaker
A World of Warcraft quest in Abyssal Depths. Facts and objectives from the current retail game data.
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
i've only done the quests leading to "The Wavespeaker" and im able to see Wavespeaker Valoren and can talk to her from all sides.
If you approaces her and accepts the quest "Free Wil'hai" before getting this Q, Captain Taylor wont even offer you "The Wavespeaker"
I am yet to try to complete "Free Wil'hai" and then speak to Captain TaylorI'll try that and update with the result.
Update
Captain Taylor doesnt offer "The Wavespeaker" after you've completed "Free Wil'hai" so if you are going for achievement "Sinking into Vashj'ir (ally)" / "Sinking into Vashj'ir (horde)" go talk to Captain Taylor before taking "Free Wil'hai" (giving you 1 more Q)
I am at this npc right now, she appears and as soon as you get close enough to interact, she disappears.
Quest facts
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(26056))
Requirements
Read from the Blizzard quest API.
Description
One of the Earthen Ring, Wavespeaker Valoren, swam down into the Nightmare Depths to the northeast. We haven't heard from her in awhile. Swim out there and see if you can find her.
Community notes from Wowhead · 57 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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Where this quest fits
Other quests with this name
This one: Alliance only · Abyssal Depths · Level 30-35.
Steps, storylines and map placement from the client’s QuestLine, prerequisite and QuestPOI data; neighbouring quest text is Blizzard’s own (quest API), shortened to its opening sentences.