Isabelle was born and raised in Delco, Idaho. She moved to Pittsburg, California in 1960 where she raised her 5 children. She was preceded in death by her husband Bernt N. Pedersen, one son William B. Pedersen and one granddaughter Desirea A. Mercer. Isabelle is survived by one sister Donna Herrera of Pocatello, Idaho, two sons: Brent and his wife Kathy Pedersen of Apoche Junction, Arizona, and Jay and his wife Sheryl Pedersen of Carlotta, CA. Three daughter: Steffani and husband Tom Higbee of Wayland, Michigan, Brenda and her husband James Coe of Antioch, Ca, and Alecia and her husband Clinton Passalacqua of Pittsburg, Ca. Six grandsons: William B. Pedersen of Utah, Mark E. Pedersen of Arizona, James W. Mercer of Pahrump, Nevada, Avery Passalacqua of Hayward, California, Richard B. Mason of Sacramento, California, and Allen J. Coe of Reno, Nevada. Nine granddaughters: Roxann Calderon of Eureka, California, Teri Pedersen of Bay Point, California, Sabrina Wurtz of Eureka, California, Dionne Mercer of Antioch, California, Lou Ella DeMoss of Oakley, California, Haley Mason of Sacramento, California, Amy Hogan of Antioch, California, Dana Warren of Pittsburg, California, and April Chamberlin of Brentwood, California. She is also survived by 35 great grandchildren and 3 great  great grandchildren.