I haven't, but will look for it. Maria was in this docu quite a bit and was listed not only as her daughter, but also her biographer, as you've pointed out. She didn't express anything negative about her mother, at least in this piece. Though I did notice a curious void of personal anecdotes about them as mother and daughter and saw no pictures of them together. Maria did mention that Dietrich was always broke. She said she spent a lot of money, but never had any and that it drove Maria's father crazy.:-) I imagine it must've been difficult to be her daughter; it seemed she was always away entertaining her "boys" as she called the troops or taking care of refugees, etc.