how does the author peter's character to devlop the theme of healing in chapter 27

Cole’s transformation is tested by Peter’s presence. Cole again has to suffer greatly by living in the cold tent outside the shelter until Peter feels comfortable with him. Peter continually insults him, destroys his carvings, and doubts the veracity of Cole’s transformation. He goes as far as completely beating Cole up. However, as the final few passages demonstrate, no one is beyond the reach of healing and forgiveness. In this way, Mikaelsen rounds out Cole’s own coming of age tale by connecting it with the life of Peter Driscal, the victim whose suffering persisted although so much healing had occurred in his aggressor.