I was queuing for PVP pet battles out in Tanaan. I got the Doom Lord's terrace as the battle area. I loaded in and noticed I was in combat, which was odd since I'd just been sitting in Vol'mar. I had noticed that Doom Lord had been standing there right as I loaded in. I got the leaving combat message shortly into the pet battle. I won the pet battle and loaded back into Vol'mar. This is when I noticed that Vivianne was dead with a recent debuff. Killed by the Doom Lord.
Have to admit, I laughed when I read this. Vivianne annoys me, most of the bodyguards do actually. Only one I use is Leorajh now, and he seems to get himself into less trouble than the others. He still has his moments, though.