In 1958 she participated in a seminar on the Athapaskan languages of North America held in Norman, OK under Dr. Harry Hoijer.
The following year she prepared for publication her findings on the sentence structure in Western Apache.
[3] During the first winter she got severe sinusitis, in the spring of 1919 the terror and violence of the Samil Movement had a toll on her nerves.
The Presbyterian board in early 1924 assigned Edgerton to work at a school in Ganado, Arizona, on a Navajo reservation.
At the school she noticed that kids weren't allowed to speak Navajo, except for a short time after supper.
In 1944 she decided to leave the Presbyterian mission and joined Wycliffe Bible Translators.
She and Geronimo Martin revised older translations of Luke, Romans, First Corinthians, Revelation, and Mark and completed the New Testament.