Take a group with you to challenge the Spiderclan Matron and destroy the Spiderclan Queen Mother. After you report back to Arch Witch Azzenaj, you agree that the Queen Mother of the Spiderclan must be destroyed. As this is a group event, Azzenaj will only allow you to start the quest if you are part of a group. You are sent back to the Spiderclan Matron (at /way dathomir -137 227 - through the left-hand tunnel of the cave whose entrance is at /way dathomir -190 308).