IMO if she killed or arranged to have someone killed, the LAST thing she would want is to have the case(s) reopened or to draw any attention to it. Also gunning for RZ the way she has would make her the first person on the suspect list.
No, I am more suspicious of the dogs that didn't bark.
I agree. What could be more delicious than murdering your "enemy" and getting away with it? Futhermore, I can't see DS heading over to her ex-husband's house in the dead of night to attempt the complicated murder of his martial arts trained girlfriend whose sister is also in the house. I personally would not have had much expectation that DS would come out of that situation unscathed.
If this was "staged" it was quite a lengthy and involved process. Did she bring the spray paint with her? Were there Injuries on DS that could not be explained? Would not RZ have defended herself? How about staging the hanging etc? Lots of physical tasks to pull this off...and DS did all this with no outcry from RZ, no commotion being heard? That would be worthy of the most highly trained KGB operative.
And if she hired someone , was that hired killer going to hang around and risk HIS neck by spraypainting messages on the door and hanging his victim? Certainly complicates his job.
I think ....in my fiction writing...which is all any of us can do...is that the answer is in that lost voicemail and in the dynamics between JS and RZ after his son was gravely injured.
At the moment, I believe that was an accident. But grieving parents will assess blame even in accidents. Dina had TOLD him she did not want RZ alone with Max. JS probably thought she was ridiculous but now their son was dying and his ex-wife was looking at him across the child's bedside with "I-told-you-so" eyes. Did he tell RZ that he wanted HER out of the house....is that why the dog was put in a kennel and her sister sent home.? Did she shop with her sister because she felt her comfortable life with JS was coming to an end?
Was the voice message something to the effect ..."Max is being taken off life support. When I get home tommorrow...I want you gone."
This does not mean that RZ and JS were not blissfully happy BEFORE..or that she was in any way responsible...but a life changing event had occured and she may have been a momentary and convenient scapegoat. AS seems to move from one woman to the next even without tragedy. Maybe RZ realized, her life with HIM was over...and to her, that meant HER life might as well be over.
She took the time to prepare. She left a message that I think JS understood.
I don't see any murders here. Just tragedies.