Thelma was a member of the College of Human Ecology Alumni Board for a number of years and served as president of the organization. During this time, she instigated the development of two scholarships, one honoring Dean Jeanette Lee and one in memory of Jean Robinson Page.
She is a life member of the National Association of Family and Consumer Science and has served in officer positions of the Michigan Association of Family and Consumer Science. She was a long time member of the National Council on Family Relations, served on committees there and was the Executive Officer for the Michigan Council on Family Relations following her retirement from MSU.
Thelma has widely traveled to places such as Asia, Africa, Europe, Near East, and South America. Presented at the Taiwan Home Economics Extension conference in 1989 and was co-leader with her husband, Professor Clarence Hansen, on a People to People Tour of the Soviet Union in 1988. During these travels she has contacted and visited many former Human Ecology graduate students.
Thelma has been active in the Peoples Church, United Church of Christ Denomination, MSU-RA, and Human Ecology Retirees. She is the Grandmother to nine grandchildren and spouses and has sixteen great-grandchildren.