I think Howard's gig is all these confidential agreements and videos. Upon Anna's death, they all turned to "blackmail".
I'm betting the house that the Anna's testimony for the inquest will be a video and her statement to the police. She will exonerate Howard in the video and say how wonderful he was. She may even have a "wish" in there.
But, I think she changed her mind and come to some realization of the truth. Alas...just too late. She had already been doomed and would never be a LIVING witness at the inquest.
“I’m betting the house that the Anna’s testimony for the inquest will be a video and her statement to the police. She will exonerate Howard in the video and say how wonderful he was. She may even have a “wish” in there.”
Wouldn’t it be great if that video (if it is indeed, as you describe it), got “lost”? Oh, just let me dream for one shining moment!