Being a woman had closed many doors to Hazel Sinnett, but it had also revealed to her a valuable tool in her arsenal: women were almost entirely overlooked as people, which gave her the power of invisibility. People saw women, they saw the dresses women wore on public walks through the park, and the gloved hands they rested on their suitors’ elbows at the theater, but women were never threats. They were never challenges worthy of meaningful consideration.