For me the same.
I did these steps in Act 1:
1. Talk to Minthara and promised that I will talk to the prisoner.
2. Freed Halsin and start to attack the Goblins
3. Knocked out Minthara. She got the status "Permanently Knocked out"
Now I'm in Moonrise Tower and there is no Minthara. Only the goblin from the Windmill in the destroyed village.
Is this a bug?
In the news pages there was only written that I have to knock her out when I attack the goblin leaders. No other steps.
