How does Hugo von Hofmannsthal use imagery in The Tower?

In Act II, Scene II, a peasant woman comes in, and through conversation reveals that she is Sigismund's foster mother from the farm family with whom he lived early in his life. She combs his hair as she tells him his foster father has been dead for years. Sigismund mentions that he has visions of his foster father, and the peasant woman urges him to pray. Sigismund says he feels so powerful that he can blow away a straw and a stone tower with equal ease. The Peasant Woman speaks poetically about how beautiful his soul is. He speaks with vivid imagery about how he identified with the death cries of a slaughtered pig. When she tries to get him to pray with her, he asks to be taken home.