She plays major roles in Distant War and Rebellion. In Distant War she is responsible for the potion that weakens the enemy army, and in Rebellion she helps sway the Natives into joining the Roudange Cause. After the quest, she can be found inside of the Guthixian Church. If you talk to Phantuwti Fanstuwi Farsight, the conversation will follow. If you talk to Lana after the quest: