User blog comment:RemosPendragon/Canon policy (part 3)/@comment-2253300-20140626211213/@comment-24909831-20140626225702

These sources do not say that Arhra fell into chaos: But I can't tell about that Path of the Warrior or 5th E rulebook.
 * Codex: Dark Eldar (5th Edition), pg. 52
 * Codex: Eldar (6th Edition), pg. 58
 * Codex: Eldar (4th Edition), pg. 33
 * Codex: Eldar (2nd Edition), pg. 84

But seeing Ghost as ultimate knowledge concerning Eldar, I think that she should have a word in this debate.