I triggered the 1st scene where you stumble upon the 1st victim killed and need to examine and find witness. I did everything to where I talked to Jorleif and accused Wuunferth of being the killer. Investigate the Manor, collect the items, talked to Viola then Calixto and sold the amulet to him. I did leave the city and didn't come back for probably a couple weeks in day's wise doing other things. And when I came back to finish the quest to unlock the Manor to live in and Arivanya was naked apart from under wear and had cuts and guoges out. Seems I must have missed the timing for when she is suppose to die. I looked through the quest to figure out how to get unstuck but for what I was experiencing it wasn't there. I did try to use the commands the quest pointed out like disabling and enabling Calixto and Arivanya. Even did the ressurect and reset ai. I then tried to kill Arivanya and it seems she can't die. Even the kill command wont kill her. She just staggered.
Any way to fix this or bypass this part?
I did talk to Wuunferth in prison and he said to go to the quarter after 7pm to catch the killer. I did that and Calixto followed Arivanya around and did nothing but follow. I did somehow get Arivanya to disapear. Might have done disable on her and Calixto did the kill animation at the quarter but no one was there. I then enabled Arivanya and she stood in that spot but nothing happened. I didn't get any update to the quest or anything. It was still listed as completed.
I'm not sure if using the quest commands will work. I tried to use them for the Deadric Quest for the orc stronghold since the gate was locked and couldn't be picked. I had no luck enabling the quest to show up in log or trigger any of the parts of the quest and did every command for quests. So no idea if it will work for this since I had no luck with the previous quest.
Edit: Doubt it helps but I'm playing the Standard Legendary Edition.