The Cuachic Vault (I'm stuck)

I killed Zolin and Zelina, then Doryani appeared. I clicked on the quest, and after that the boss started to attack me.

I went back to The Glade and then to King's March, and nothing happened.

I reset the instance and killed them again, but Doryani didn't return.

I went back to The Glade, talked to all the NPCs, went back to King's March, talked to all the NPCs. I reset The Cuachic Vault, killed the boss again and nothing is changing... I've been to King's March multiple times, cleared my cache, etc.

I'm stuck and can't get to the endgame.

Bug Report Ref: 1.885.427.455