Mrs. Willmond was co-author of Chickasaw: An Analytical Dictionary, published by the University of Oklahoma Press in 1994. This analytical dictionary is one of the resources used in language classes taught by the Chickasaw Nation.

Mrs. Willmond worked with linguistics professor Pamela Munro to record the language from more than 40 Chickasaw speakers to complete the dictionary.

Mrs. Willmond also helped teach linguistics classes at the University of California, Los Angeles. She also made guest appearances in First American studies classes at UCLA. She also addressed audiences at Pomona College and University of New Mexico. Recently, Mrs. Willmond and Munro completed a teaching grammar of the Chickasaw language which was accepted for publication by the University of Oklahoma Press.