Bird of Immortality, Where Do You Fly?

A slow story about immortality. The protagonist is single, and maybe a girl with no wants, no needs, and no desires?

For human civilization, a thousand years is the distance from the Old Stone Age to the Information Age. For her, a thousand years is merely the end of childhood.

She has spent an unimaginably long time on this planet. She saw humanity rejoice at learning to shape stone tools, saw the first deliberately buried seedling push through the soil, and witnessed the casting of bronze, the tempering of iron, and writing taking shape on clay tablets.

She has seen countless humans die.

And she has seen countless humans be born.

This is a slow, long story,

and a story about long-lived and short-lived races.

All characters in this book are adults.