Ok so this quest is the one where you are gathering the dwarves. So I went to do the task for them of freeing Dorri. I went to the Dourhand area in which he is imprisoned. I didn't realize it was an escort quest so I just ran right through the dourhands. I realized to late that it was. 30 dourhands came upon me and Dorri, killing both of us. When I respwaned it said I failed the quest. I no longer had it in my quest log and I tried to get the quest again, to no avial. Will I still be able to advance to the end of book 3? How can I fix this?

Thanks in advance.