Shadows of the past main quest bugged, can't find Temerti at the end so im stucked

[LouLou_AcR]

At the end of the quest, after the trials and after the choice between Lodwyn and Ryngrim i have to talk with Temerti at Thirdborn but she isn't there. After 20+ hours i can't continue the main quest. I tried everything but no matter what Temerti won't appear, so i simply can't play the game anymore...