According to the Sourcebook at least there's a change in tribal leadership for the Cinsina by the time of the Battle of Queens, their section of the army is lead by Farandar Red Cow, who I presume is Orendalson, but nothing in print currently describes the fate of Ivartha as far as I know. She's not exactly a lunar toady but could she have been at the dragonrise, not necessarily a casualty but present?