Dr. Cofer serves as Professor of Voice in the School of Church Music, where she teaches private voice as well as courses in foreign language diction, solo vocal literature, voice pedagogy, and practice teaching. Before coming to Southwestern in 1989, Dr. Cofer taught on the voice faculty at the University of Arizona in Tucson from 1983-89. Prior to this, she was a graduate assistant at both Cincinnati Conservatory of Music and Louisiana State University and an adjunct instructor of voice at Abraham Baldwin College and Louisiana College.

As a mezzo/contralto, Dr. Cofer has performed a variety of repertoire from oratorio, opera, and art song to gospel song and spirituals. In 1980, she was chosen as one of the six national finalists in the National Association of Teachers of Singing [NATS] Artist Awards Audition. In 1987 she was awarded a Vocal Fellowship to study and perform at the Tanglewood Music Festival, where she was a soloist in Bernstein's Chichester Psalms under the direction of Seiji Ozawa. Since coming to Texas, she has appeared as a soloist with Southwestern's Master Chorale and Fort Worth Chamber Orchestra as well as in several operatic roles with Fort Worth Opera. Dr. Cofer is also featured on recordings of the former Southwestern Oratorio Chorus, including Kvalite Boga, Deo Gratias, and Messiah Highlights. Throughout her singing career she has performed as well as taught in various churches and schools throughout the United States and abroad in Guatemala, Japan, Hong Kong, Taiwan, Singapore, Indonesia, Thailand, Philippines, Brazil, Ukraine, and Latvia.

As an active member of the National Association of Teachers of Singing, Dr. Cofer is involved in entering students and judging at the annual student auditions of the local Dallas/Fort Worth Chapter as well as the Texoma Region.