How can I be sure? 

http://www.copyright.gov/circs/circ07d.html

Federal LAW.
ALL PUBLISHED BOOKS IN THE UNITED STATES MUST BE REGISTERED MANDATORY WITHIN 3 MONTHS OF PUBLISHING.

That means ALL books.

Not eBooks, which is what hers are.

She has NO listings at all, for her name, for GODDESSY, for any of her book titles, even the numbers. NOTHING nadda.