i I remember it correctly it's more implied she mocked haera as being a fellow royal (with the nomads and the helmawrs not being related royal houses)Asun'ghar, The Lady of Ash, is a Helmawr so politics of some kind is inevitable. She does try to remove Haera but I'd need to reread the story to check if that's simple revenge, or whether she wants the top job. Also need to check whether they did anything specific to the Aranthian side.
but it can be read as she being related to the helmawr.
did the last aranthian succession book add anything to this lore?