It tells me that the first step is to sail to Tikawara which I did. I talked to every NPC in town, I cleared the island map and killed everything I encountered. I saved the caged creatures before killing the broodmother. Nothing I did will trigger this quest to update and I don't know what to do at this point to complete it.
Edited by angryusaman, 14 May 2018 - 07:38 AM.