Yeah, I wasn't sure where the torch came from all of sudden. I don't think I had one in my inventory. All I did was click a couple of times in the middle of the dark cave and it triggered a conversation with the pixie. At the end of the conversation drake lit a torch in the middle of the room for me. So, maybe look if there is interactable torch in the cave or something like that ? Sorry about the confusion. Best of luck.
Edit: I just checked, after you talk to the last of the four redheads (vida) you will have a torch in your inventory. So, check if you have that, if not make sure you talked to all of them.