ANS was in a drunken or drug induced stupor...which was her condition too much of the time. Many people taking downers over time forget when they last ingested their last dose...especially when under the influence.
I would tell her that I was giving her something to make her sleep comfortably to bring about unconsciousness and then inject her with the killer drugs...sample bottles of which I would leave around the room...AFTER having a comatose ANS hold them in her hand for fingerprints, etc..
I would then leave the room 'to shop for a new boat'...or whatever, and then feign surprise when the call came from the private nurse/bodyguard.
Sound plausable?
Does to me!
OJ...is that you?
:)
Very plausible scenario.