Dian Nissen Ramirez on Facebook:
It is with great sadness that I must share with you the passing of my mom, Annie Nissen. She passed away peacefully in her home in San Diego on April 3, 2012. She led an incredible life beginning as a Dutch acrobat in Amsterdam Netherlands, eventually joining with my dad, George Nissen. Together they brought the sport of trampolining to the world. They were married 59 years until his passing April 7, 2010. I miss you Mom and Dad.
Gymnastics Coaching.com 