Thank you for your message. I’m glad to hear that you enjoyed my article. I’m not sure how much help I can be, but I can suggest some reading that might be helpful.
On the “fractured German memory” after World War II, you might want to read W. G. Sebald’s “Air War and Literature” in On the Natural History of Destruction. Sebald discusses Alexander and Margerete Mitscherlich’s study, The Inability to Mourn, which could be helpful (although it might be a little out of date).
With regards to the temporality of trauma and perpetrators, you might want to do research into the term “perpetrator trauma.” This is a controversial idea, and I agree with Dominick LaCapra (Writing History, Writing Trauma) that it is problematic because it creates a false equivalence between victims and perpetrators.
On trauma in general, I admire Cathy Caruth’s approach in Unclaimed Experience, but this too has been a controversial topic (Thomas Trezise and Dori Laub, who took conflicting positions about trauma, could also be useful, as well as LaCapra). It might also be worth taking a look at Aleida Assmann’s book, Cultural Memory and Western Civilization.
I hope this helps!