Anna is Howard's corraborator. Everything was "Anna's Wishes". It sure does look like Howard AND KE are in trouble. If KE wasn't her best friend, it would be different but she allowed the demeaning videos and supplied the drugs and had access to her.
Both of them belong behind bars. One way or another, they both killed her. Negligent homicide. "I'm not a doctor" doesn't fly for Howard and his "I've seen her a lot worse than that" is evidence of it. "Anna's Wishes?"