Who is Jamie Fields from Glamorama: A Novel and what is their importance?

Jamie Fields is an actress who is living in London and working on a film financed by Japanese investors. She attended Camden College in the 1980s and dated Victor, who left her for Lauren Hynde. A man named F. Fred Palakon tells Victor that Jamie disappeared from the United States three weeks earlier and offers Victor three hundred thousand dollars plus expenses to find her and bring her back to the United States.