Do you think it is a good idea for Peter to visit the island? Why or why not?

In the context of this story, it makes sense. Cole has a lot of mea Culpa to do and Peter needs to release his anger. Certainly the victim spending the with the abuser can be healing only if the abuser (Peter) has changed enough to let the Victim release his anger. Cole has certainly showed signs of that change. It is also a healing process for Cole to try and help his victim.