@littlev The problem is that you’re describing exactly why he’d want to keep her alive, not to kill her. There’s also no real character motivations involved. I still prefer Hal’s version which I modified and shared above.
thats assuming that palps can inhabit anyone regardless of their power in the force. This line explains why he would want her killed.
"HE KNEW OUTSIDE OF THE CULT’S INFLUENCE YOU COULD BECOME A THREAT TO HIS RULE, AND YOU HAVE. TOGETHER REY, WE HAVE FORGED AN UNBREAKABLE BOND WITHIN THE FORCE, WE CAN DESTROY HIM.