Napier worked as a reporter at the newspaper Auckland Star, where she met her future husband, Chief Reporter Tony Potter. They had two sons, Simon and Ben.
Over 30 of her novels have been published, and they have been translated into a combined 20 languages. Romantic Times has described her work as "multi-layered" with "well-defined characters and a commanding conflict." She has twice been nominated for a Romantic Times Reviwer's Choice Award, in 1996 for Reckless Conduct, and in 1997 for Mistress of the Groom.