Yes, I said I would help them. But after I killed the four attackers (robed fanatics), anytime I clicked on D or Ryl they'd say something like "Get ready, they're coming!". I moved out into the south hallway, I shot the east two with the torch, they died, then I ran to the west two and melee'd them. D and Ryl never got their turns and I assume they never had line of sight. If you refuse to help them but kill the enemies anyway, their dialogue is different so I don't think I accidentally clicked the wrong option.
I've reloaded my save many times and can't replicate it, even doing exactly what I did the first time. I say just ignore it, if I ever get it to happen again I'll upload the save.