“Sisters: Portrait of a Benedictine Community” is an earnest look at monastic life that profiles the women of St. Scholastica Monastery in Duluth, Minn. In candid interviews, the sisters discuss such issues as aging, finding balance in their lives and how they chose their path. “I truly got a call one day, just an idea in my head,” says Sister Mary Ann Koth, a former environmental-resource manager. “And here I am in something that is a journey of the heart.”