Basically the murder story was actually reported as a suicide on the official reports. That’s all that really came out of the “story” on it.
In reality, her story of a cover-up was not disproved at all. What did you expect? That if it was covered up, they’d report the truth to some reporter?
Please note that I’m not saying she is right. I honestly don’t know what happened, nor do I really care. I’m just saying that there is no proof either way.