So, basically it is like this: approach the house first and talk to/finding the girls that were captured by the troll and free them. Then go inside of the house and take revenge by killing the troll. Afterwards, go back outside? Is that how you complete "get information about the missing girls" part?
To be honest, it has been awhile, (therefore, my memory is a bit off) but I could have sworn that the "get information, etc." was not striked off as being finished.
However, I will try again, when I am at my parent's place again (Yeah. I could not bring the save game with me to my own house, for I could not find it in time...oops) or if I have the right save (from an older version of the game) at my place where I got to the point where I find those girls and all.
Edit: Okay. I have found a save on a much much older version of the game (where it still called Spiritbound) where I got to the point where I got this quest. I have
1) walked to the house, talked to the girls, free them and walked inside.
2) Then after a good inspection I went outside, battled the troll and avenged the deaths of the girls and Nora's sister.
3) Took the Troll's head, walked back to the town and announced that the quest is done to the guard.
IF you now look at the Questlog, the "Lost Girls" is now certainly completed, but the part of "Find information about the girls whereabouts" is NOT;
View attachment 2046741
Why is this still missing? Where can I find this information? Anyone?