Dropping the dialogue did the trick. The drop must be done nearly to the end of the dialogue (when you talk about what can be done to help...
KaeseEs, I don't mind. Already did while looking for the solution. I'll look in what you've provided, thanks. Besides, having changed search...
Made it to the point, when Donn Throgg's quest becomes available. Withal, I get no option "to let him slip away", Babcock says there's nothing...
Separate names with a comma.