Nareena was the Phiadoran princess stranded on the Moon. When introduced by Lytalia to the human soldiers who were also trapped she explained their presence on the satellite.
When heading for the citadel, she explained to Captain Sinclair that the Phiadorans should lead because they knew the forest much better than the humans and would understand how to face the creatures within.
Controlling one of the saucers, the Princess led the escape out of the forest and back towards the British fleet. (PROSE: Imperial Moon)