No. She is still alive
Diane Sommerfield died on March 9, 2001, in Washington, District of Columbia, USA.
Diane Sayer died on March 26, 2001, in Newport Beach, California, USA of breast cancer.
Diane Fawcett Walls died on October 16, 2001, in Houston, Texas, USA of lung cancer.
Diane Erickson died on September 24, 1999, in New York City, New York, USA of metastasized breast cancer.
Diane Sinclair died in 2011.
Diane Itter died in 1989.
Diane Barwick died in 1986.
Diane Thomas died in 1985.
Diane Holland died on 2009-01-24.
Diane Sher Lutovich died in 2004.
Diane Sherbloom died on 1961-02-15.
Diane Webber died on 2008-08-19.
Diane de France died in 1619.
Diane Pendleton died on May 5, 1969.
Diane Hart died on 2002-02-07.
Diane Bull died in 23 December 1998 of cancer.