Kathy is the narrator. How is she portrayed in this opening how do we know this

Kathy H. is a thirty-one-year-old clone who has been bred for her organs to be harvested when she reaches adulthood. She works as a "carer," a kind of nurse-cum-companion to clones who are in the process of making their donations, and is very good at her job. Never Let Me Go follows her life story. Kathy is empathetic, mild-mannered, and passive.