Her anger is misdirected but understandable and I think she's trying to make sense of something horrible. The suspects are dead, there will be no justice for her sister (and the others) in a court of law. There is no opportunity to hold the suspects accountable for their actions, and she's angry.
AS isn't helping matters with his public statements and I get the feeling that some of her anger is directed at his book and how, when, and why he went about sending copies of his book to various media outlets. She even mentioned how her family has faced hardships but don't blame "broken systems" and that her sister rose above her circumstances and wanted to help people who were troubled.
Imagine her position throughout this entire thing. Her sister was just brutally murdered, and here comes AS saying his son is a "good boy," "a child," "a little boy," "not a Nazi, but was fascinated by Nazis," yet had Nazi material etc... (I'm NOT saying I think BS was a neo-Nazi)...there were all these red flags, and though I agree AS isn't to blame, I can see where CD's sister's rage comes from.
