Theressa is a writer and editor from New Zealand. She has her Bachelor of Arts in Comparative Literature from the University of California, Berkeley, and is currently writing her Master's thesis in languages and literature at Te Herenga Waka–Victoria University of Wellington.

She founded and edits the Manawatū-based online literary magazine, Milly, and is on the editorial team for the Wellington-based journal Headland and Seattle-based litmag Pif. Previously, she worked as an editor for the Berkeley Fiction Review and was the San Francisco Bay Area Editor for Picture this Post Magazine. She has worked as a journalist, bookseller, librarian, and social media manager, as well as a publishing intern at Stanford University Press.