Can't do Hlaalu Quests

I can't do any further House Hlaalu quests because I accidentally killed Baren Alen. I didn't think it was a big deal since I thought that I had completed all of the quests he was involved in.

And then I realized I had never done any of Edryno Arethi's quests! So now I can't do her first quest because she keeps telling me that Baren Alen is dead. I also tried resurrecting him when I found his body, but she still considered him dead. How do I fix this without starting a new game? D:

Also, I already have my stronghold.