He tried, however, to remain polite and helpful. As she went about her work, he offered his recollections from his mother's final hours and an account of her long illness, which he had documented minutely over the years. Otto informed the coroner that he was a doctor, but it seemed to him that she was uninterested. She turned to the police officers and, without explanation, told them that this was a matter for law enforcement, before leaving the flat. Otto told me he wondered why nobody was listening to him, the grieving son, the doctor?