Ah yes....it is all coming back to me now. THANK YOU!
Eta: I don't think she poisoned her cop husband...I think she merely knocked him out so that she could escape and give herself a head start (because he was a cop and he would get into trouble if he tried to protect her or if he didn't try to stop her). This way, she could tell him the truth about who she really was, and leave immediately after and he was physically incapable of doing anything about it.