Miller was born in Vancouver, British Columbia, Canada and moved to Australia at the age of two.

Along with being a novelist she has written and directed plays for her local theatre group.

The Innocent Mage was widely acclaimed on its release in Australia and was a finalist in the 2005 Aurealis Awards fantasy division.

In 2007, she was shortlisted for the James Tiptree, Jr. Award for her novels Empress of Mijak and The Riven Kingdom.

[3] Miller also writes under the pseudonym K. E. Mills,[4] releasing the first novel in the Rogue Agent series, The Accidental Sorcerer, under this pen name.