The nesshin who escaped
Senna is an older nesshin with silver hair and extremely pale skin. Senna was discovered by the mining party when they entered the caverns beyond the mine. During the escape, Senna fell unresponsive and unaware. The party took Senna to the healer Jevin and, with his help, was able to ask her a few questions.
Senna was a member of an adventuring party some years ago. The group’s quest was supposedly to slay the evil goblins in the Citadel, but one party member, Belak, betrayed them, allying himself with the goblins and using the power of the Gulthias tree to enslave the surviving party members. Senna served as Belak’s research assistant until she was able to escape, thanks to the miners who opened up her escape route.