I was in the blue palace with 2 followers were I attempted to pickpocket someone but ended up getting caught instead, while I was bribing the guard everyone else was fighting in the background. after I finished my chat with the guard I looked around only to notice Bryling laying on the floor dead looted her corpse to find some unique gauntlets and shoes anyways UESP states that she is essential yet she is dead in my game and I am on 360.