Letha was born in Hawaii, raised in Colorado, and currently lives and works in Brooklyn, New York. She received her BFA from Syracuse University, and her MFA from Hunter College in New York City. Letha attended the Skowhegan School of Painting and Sculpture in 2009, and her artwork has been shown at many venues including MASS MoCA, Art in General, DeCordova Sculpture Park, Bronx Museum of the Arts, The Aldrich Contemporary Art Museum, Socrates Sculpture Park, Bemis Center for Contemporary Art, and International Center for Photography.
Letha's work has been reviewed in Artforum, Art in America, the New York Times, The New Yorker, among others. Letha has been awarded artist residencies at Yaddo, The Farpath Foundation (France), Bemis Center for Contemporary Arts, Headlands Center for the Arts, and the Sharpe -Walentas Studio Program. In 2014 she was awarded a New York Foundation for the Arts Fellowship in Photography and chosen as the Deutsche Bank Fellow, and was awarded a Jerome Foundation Travel Grant. Currently Letha has several works at Mass MoCA for the In The Abstract group exhibition, and a large-scale outdoor sculpture for the Platform series at DeCordova Sculpture Park and Museum, Lincoln, MA; both exhibitions are on view through Spring 2018.