A great many beasties wander the realms, some good, some bad, some just wanting to roll in mud. But in many of them Elves, spirits, gods, demons.. They also exist in one way or another. Middle earth however was surprising relaxed before and after the Ring wars. Elves departed or stayed, man grew and thrived, dwarves did their own crafts once more... and the Remaining Nazgul were lost.
Many do not know what happens to the wraiths after Sauron died for good, even less seem to remember that anyone and anything could become one of the Nazgul.
Poor Nireth was one of the last remaining Light elves, firstborn of The Children of Ilúvatar. As they left or died off Melkor had other ideas, a few men and women stolen to test ideas. Some became Goblins and orcs.. others faded but were unable to die from his terrible curse. It was only later when Sauron came to power did that curse be shifted and melded, changing the soul and body of the cursed with ever lasting life. It was soon after that Sauron finished his twisted spells and bent the last two from their noble bloodlines turned instead into the first albit not exactly correct Nazgul... The first attempt.
Nireth was left in chains and cage, ever defiant her light and the curse's darkness balancing leaving her in control, but still a knight of undeath.
As the witch king Died, his magic freed, sauron's place tumbling from the tower as his very essence melted down.. She was freed, Left to wander.
And wander she does!
Nireth is an oddity among Nazgul, relaxed and kind she chooses books and comfy spots over battle and slavery, But as an ex-elf, is also one of the few of the nazgul able to use a bow tipped in the same deadly metal that turns flesh and bone into spirit and shadow.
She stands at a simple lithe 5'1, smaller then most of the ring wraiths and even some of the elves. Her first appearance is that of a feminine nazgul with dull pale blond hair flowing from her hood, Clawed gauntlets tipped in green with matching greaves, a long flowing black robe tattered clings to her form with a metal corset across her stomach.
Anyone with spirit sight would see a beautiful elvish woman, smiling sadly, manacles on her wrists and ankles and a collar on her throat in black metal.