She entered the Congregation from the Maryknoll Sisters Initial Orientation Program on March 1st, 1982 in Seoul, South Korea. She arrived at Maryknoll Sisters Center, Maryknoll, NY in 1983 to continue her preparation to become a Maryknoll Sister. She pronounced First Vows May 26th, 1985 at the Sisters Center in NY and Final Vows May 21st, 1994 in Hawaii.
Sister Yoo Soo was assigned to the Central Pacific Region in 1985 but had to wait in Korea for more than a year to get her visa for Hawaii. In Hawaii, Sister Yoo Soo has taught Sacred Dance at Chaminade University in Honolulu. Besides Sacred Dance her art includes photography, oil painting, traditional Korean paper cutting, water colors, ceramics, flower arranging and the Korean tea ceremony. Her art work has been exhibited by the Korean Art Association of Hawaii.
In November, 1991, women leaders from South Korea, North Korea and Japan planned together the Seminar on Peace in Asia and Women’s Role, hosted by Korean Women’s Associations United. It was the first south-north women’s meeting since the division in 1945. Sister Yoo Soo represented the Maryknoll Sisters at this meeting. She continues to carry on this work in Hawaii and Asia.
Today, she resides at the Maryknoll Sisters Center, Maryknoll, NY and volunteers as needed.