I'm starting to doubt that she dies. They already stated that they won't be giving her the Garrosh treatment, and now we see her with Xal'atath around the same time N'zoth and Azshara start revealing themselves as the big threat. She's probably gonna get the boot, then scurry off to go do Chaotic Neutral things with knaifu and end up becoming an antihero. Starting to think that she's going to be alive for quite a long time, just not under the Horde banner.