OOC:
It was the old Shaman, Carthalo, that warned you of the Stone Woman. Lannike never lived long enough to encounter her, she was murdered before Danakos and the other Greydogs arrived at the broken tower. From what you can surmise, it was never their intention to go to the tower, but something influenced Danakos to go there and ultimately sacrificed his kinfolk and 5 of the cattle.
On speaking with elders of the village you learn of Idrima, the Stone Woman, one of the daughters of goddess Maran Gor the Earthshaker. You appeared to defeat a demi-god in combat, but suspect it is not the end of her.