[4] Hummel attended the Katharine Gibbs secretarial school in Manhattan, graduating shortly after March 1944.

[6] He was swayed by the essays she wrote on a take-home exam,[4] giving her the highest grades he had ever awarded to a student.

[4][9] Hummel quit authoring Wonder Woman in late 1947 after her honeymoon, ostensibly to spend more time at home and care for her stepdaughter.

She later revealed that she was aggrieved by how the comic's new writers eliminated many of the feminist themes championed by Marston, who had died earlier that year.

[4][5] She stated: "Even if I had not left because of my new daughter, I would have resigned if I was told I had to make [Wonder Woman] a masculine thinking and acting superwoman.

[4] Hummel was consequently contacted by the Smithsonian Institution, who asked her for the two packed binders containing the Wonder Woman issues she wrote.

[5] Hummel won the 2018 Bill Finger Award for Excellence in Comic Book Writing as a guest of honor at San Diego Comic-Con.