She authored several books and articles associated with social ecology, the body of ideas developed and publicized by Murray Bookchin.

Since the early 1980s she has earned her living as a freelance copyeditor for New York book publishers including Random House, Knopf Doubleday, W.W. Norton, and Farrar Straus & Giroux.

She then moved to New York City, where she appeared in off-off-Broadway productions, including the world premiere of Fefu and Her Friends by Maria Irene Fornes.

[8] In 2014 and 2015, she visited Rojava, the multiethnic region of northeastern Syria where many Kurds live and where the Kurdish movement implemented democratic confederalism, gender equality, and ecology.

[10] She then translated (German to English) Revolution in Rojava: Democratic Autonomy and Women's Liberation in Northern Syria, written by Michael Knapp, Anja Flach, and Ercan Ayboga.

Thereafter she translated two volumes of the memoir of Sakine Cansız, a co-founder of the PKK in 1978 and progenitor of today's strong Kurdish women's movement.They were published as SARA by Pluto Press.

In the spring of 2019 Biehl returned to Rojava, now called the Autonomous Administration of North and East Syria, to participate in an independent documentary film about the ongoing social revolution.

She wrote and drew about the experience in her graphic memoir Their Blood Got Mixed: Revolutionary Rojava and the War on ISIS, which was published by PM Press in 2022.