Awhile ago (maybe a week or two) I finally completed the independent study quest and gained the ability to play through chasm of screams for Thorn. I tried a few times on my own but barely got anywhere. A few days ago I got a friend to help and we managed to complete the strike. After completing the strike I expected either for Thorn to drop, give us one final place or person to visit, or for me to click the quest and it goes to my inventory. However it still says to complete chasm of screams. My inventory wasn't full btw. Any help with this?