This is why the Nightborne joining the Horde is one of the stupidest lore decisions I have ever seen. With all that her people went through, Thalyssra would NEVER stand for the use of chemical weapons, the countless slaughters, and other atrocities committed by the Horde . They shouldn't have decided to join the Alliance either. With the superiority complex the Nightborne have, it would have made more sense if they remained neutral and within the confines of Suramar, only leaving to trade or do mercenary work.
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