You must be level 50 and have completed the quest before this to obtain this quest.
Steps
Talk with Vergo Stormherald at the Camp of the Faithful Wu in Lesser Faydark ( 797, 120, -393 ) Copy/waypoint 797, 120, -393. He wants you to help him and find kidnappers.
Look around for some clues (these are all clickable stones along the path):
some fabric and leaf under stone ( 691, 62, -253 ) Copy/waypoint 691, 62, -253
hair ribbon under stone ( 619, 29, -35 ) Copy/waypoint 619, 29, -35
Enter the cave through the entrance at ( -4, -57, 224 ) Copy/waypoint -4, -57, 224. Once in the cave, head towards the kidnapped Priestess of Growth (Esthella Evenheart), who is at ( 69, -94, 327 ) Copy/waypoint 69, -94, 327. There are several level 58 ^^^ heroic aggro shamblers along the way (none of which sees invis) and Esthella will be guarded by either Malagate (59^^^) or its placeholder, (a crystalline construct). Speak to Esthella Evenheart to get the update.
Return to Eva for your reward.
Rewards
Favor: Completing this quest gives 7500 faction with Tunare