[1] Platt-Decker married a third time in 1899,[2] to Westbrook Schoonmaker Decker (1839-1903), a Denver judge who died in 1903.

In her four years as president, she gave hundreds of speeches persuading members to take up the cause of women's suffrage.

[1] Platt-Decker died in San Francisco in 1912 after a bout of kidney disease while attending the General Federation of Women's Clubs convention.

[1] An obituary in a Denver newspaper described her as "Colorado's foremost woman citizen and the real leader of the suffrage movement in the United States".

[1] Another wrote that she deserved "a great share of the credit that Colorado became the first state in the Union to realize the political rights of women".