Peter's fiction is fiction. He takes moments from his life and twists them around. However, he wouldn't describe his work as autobiographical - except in their tone of angst. 

"Ich bin davon voellig besessen." Peter goes on to explain how the Pogromnacht and other horrors of the Holocaust seep into a lot of his work. While he hopes it isn't the focus of every story, it certainly plays a role in his writing.

Good or bad is not always a question of black and white. It is rather grey. 

Question for Peter, You mentioned that your parents refused to stop speaking German when they emigrated, which would mean forfeiting a fundamental facet of their identity. And so you’ve already spoken a bit about this, but I’d love to hear more about what significance German-speaking has for you and its role in your work.
Here, Peter explained that he has a private theory of left and right-hand consciousness. He associates his German with his left-hand consciousness and describes it as an idiosyncratic German. When he speaks German he is brought back to his childhood. The certainty that he experiences in life as his adult-self is balanced out when he taps into his child-like consciousness, inspired by his German.