In 1985 Karen met and later married George Duet who was a U.S. Army Retired (Special Ops) warrior. In his 20 years in the Army he had been involved in the military K-9 program. He had been Kennel Master at Ft. Benning GA in 1965. Together they began to study French Ring Sport (Obedience, Agility, and Protection) and brought one of the first trainers from France to California as an ambassador to the sport.
After training her Belgian Malinois “Nana” in both French Ring and Schutzhund (Obedience, Tracking, and Protection) Karen wrote her first book: The Home & Family Protection Dog, followed by her next book The Business Security K-9 in the 1990s. Later in 2000, she was asked (by Macmillan Publishing-Howell Bookhouse) to pen the book Advanced Schutzhund which was nominated for a Maxwell Award for excellence in writing. Later she penned the book Dog Training 101 (2007) as a manual for her training staff (that had increased to 19 employees) and for her student dog trainers in her Dog Trainers Course. Her most recent book: 'MILLION DOLLAR DOG TRAINER. Making Millions in the Billion Dollar Pet Industry' (2021) and her new Online Dog Trainers Course titled: 'BECOME A MILLION DOLLAR DOG TRAINER' is about the business side of dog training. This work and the new online dog trainers course has been available since 2022.