After the success of the suffrage movement, Ames turned her attention to the issue of birth control, believing that women should have control over their reproductive health.

Ames became a staunch supporter of Margaret Sanger, a pioneer in the birth control movement, and worked with Sanger to promote access to contraception and reproductive health services.

Ames advocated for the repeal of laws that restricted access to contraception and worked to educate the public about the importance of family planning. She often faced opposition from religious and conservative groups.

Ames continued to advocate for birth control and reproductive rights throughout her life, remaining committed to empowering women to make informed decisions about their health and families.