Who is Olivia Presteign from The Stars My Destination and what is their importance?

Olivia Presteign is the Presteign's daughter. She is an albino,who is also blind to normal sight. Olivia sees things in infrarePd. Over the course of the novel, we learn that it was Olivia that ordered Gully Foyle abandoned when she was ferrying refuges from the Outer Planets on the Vorga. She ordered the passengers spaced as well. A cold and calculating woman, she touches Foyle's heart, and his love for her nearly destroys him as it collides with his revenge