What sort of legal punishment in New Jersey can a satanist that has manipulated a heroine addict into killing someone?

For instance... A certified weirdo in New Jersey that also happens to be a satanist gets infuriated(understatement) that her boyfriend or fiance is planning on leaving her. She places a keylogger on his computer and gets the goods on him wanting to leave, not to mention his facebook and email passwords(among everything else he typed into his computer), puts a plan together with a mutual friend that has sexual interests with her and also happens to be a suspected satanist as well as a known heroine/drug addict(with an arrest record indicating so). After the killing(let's say by morphine poisoning - precisely what a heroine addict might have close by), the deceased's facebook account gets changed(photo of deceased is replaced by another image and other settings noticeably changed) admittedly by his significant other with the ploy that she is so inconsolable and all the while never really getting around to explaining why she hacked is facebook account and changed things. Even with an insanity plea(if applicable), what would be the most likely legal outcome of a situation like this???