A group of friends and I were running Direfrost Keep on regular mode, but against Veteran Rank 2 enemies, since there is no veteran version of this dungeon. We got through most of the fights just fine, then we came upon Drodda of Icereach and wiped multiple times, on normal mode. Reason for this: she appeared to be HEALING herself. She would spawn the adds, and then one of her abilities or other seemed to heal her drastically. This is not listed anywhere in the forums or on other sites.
One of my friends theorized that the dungeon is glitched and some of the areas of the summit actually heal herself and players constantly while in it, but she seemed to be far more affected by it then other players. I personally theorize that one of her abilities does this when faced at Veteran Rank 1 or above. Clarification from someone, especially Zenimax, would be helpful.
PSN Username: AtomicSpatula
Veteran Rank 1 Argonian Nightblade Healer: Sight-of-Amber
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-Siddhartha Gautama