Born and raised in Northwestern Montana, Tammie grew up on the Flathead Indian Reservation. Her father was Qlispe', Seli’š, and Ksanka (Upper Kalispel, Bitterroot Salish, and Kootenai) and her mother was of the daughter of non-Indigenous settlers who moved to the reservation in the 1920s. She grew up with access to these to different worlds and became aware, very early, that the history of indigenous peoples as taught in schools, if it was taught at all, was not complete or truthful. For centuries, aided and abetted by the US Government, non-Indigenous Americans have cultivated a purposeful and harmful amnesia with regard to Indigenous people and culture.

Tammie's work pushes against this amnesia by creating "stories" that investigate concepts of erasure, kinship, belonging, history, transition, transformation, and ambiguity. Her work also celebrates the resilience and survivance of Indigenous people, giving voice to that part of her that has survived and thrived. Tammie considers herself and her work as a bridge between Indigenous and non-Indigenous cultures, between Western European art and Indigenous art, and between the past and the future.

Tammie is currently a Masters of Fine Arts candidate at Massachusetts College of Art and Design, Boston. She holds a Bachelors of Science in Anthropology/Archaeology from Montana State University, Bozeman, as well as a Bachelors of Fine Arts, summa cum laude, from Cornish College of the Arts, Seattle, with a focus in Painting and Sculpture. Tammie has also attended Gage Academy of Art, Seattle. She and her art practice are currently situated in Bremerton, WA.