True, the slaves are not titled "frightened salves" just that their dialogue suggests they were a bit scared, however...
I have just earned enough points to enter the inner compound in Silden, i then spoke to the leader who then tells to speak with his shaman in the outer compound, through dialogue about ANOG and INOG says he will show you where the rebels are hiding and to follow him.
He takes you to a hill in the woods and then leaves you, wild beasts have to be dealt with, you finally get to see a guy - FREMAN, he is collecting and looking after the slaves who have nowhere to live. You will get the option dialogue for "each slave" - now although the three slaves i mentioned were still in Silden, through the amazing AI structure, the slaves began to make their own way towards the rebel camp while i was stood still, waiting. I realised they might get killed even though i had cleared the area of wild beasts. I rushed down the hillside and sure enough i met the slaves casually walking to the rebel camp but strangely they were kept on hold and did not emerge from the woods until i had killed about six lurkers and four wild boars that had now appeared. It was then that another fourth slave emerged from the woods that i hadn't previously met, thats four slaves - there's one left, not sure where he is.
Yet above all of this the main thing is i have read the fifth book of Innos in Silden, it suggests the path that i must take that is progressively revealed and in some way covertly intertwined with the main storyline.