The quest works fine. Just give her the 4 essences to retrieve the earring.
I had ally faction on turn in.
The way to the NPC is very difficult as Skyshrine is a very big labyrinth.
Your have to pass a maze that does consist of two parts (which look absolutely the same)
and is spicked with teleporters. Here a rough instruction on how to go through it:
Hug right to the first portal, hug left to the second, turn around and go straight to the last" to get through.
More informations to the maze and zone here:
https://everquest.allakhazam.com/db/zones.html?zstrat=107