Aeryn-Chiana existed in one of the unrealised realities Crichton saw while being shown the dangers of wormhole travel by the Ancient ‘Einstein’ in the episode ‘Unrealized Reality’. She was a Nebari who looked a lot like Aeryn but acted a lot like Chiana, including having Chiana’s considerable sex drive. When Moya came under Peacekeeper attack, an hysterical Aeryn-Chiana was tongued by Rygel/D'Argo after which she went into a seizure and died.
When Crichton returned to this reality with Scorpius in the episode ‘Prayer’, Crichton watched as Aeryn-Chiana died again when Scorpius shot her.
Annie Single was the hair & makeup supervisor.