I was thinking more along the lines of people Audrey might have told.
Not sure who among PK or his wifes' friends would have motive to harm AG? Even then, they'd have to come up with a plan quickly as the visit was rescheduled.
@No_Stone_Unturned While I cannot find a link at this moment, I haven't found anything stating that these three womens cases are connected. Personally, I do not believe these three are related.
I'd say if any one of the women mentioned here were the victim of a "lust murder" it would be SV. JMO.
Whatever was done to Audrey I get the feeling it wasn't meant to be sexually gratifying for the perpetrator. More along the lines of humiliation and retaliation. JMO.