because the aim was to control jack by killing his wife, not killing him. from a bounty standpoint, you don't kill the primary target: you manipulate everything around them to control their decisions. she was more intellectually dangerous with regards to her nuanced understanding of global social elite protocols than he was as well. as evidenced by her lengthy career as an editor/writer/social influencer amongst the global elite. how's that.

Not a bad explanation, but why are you calling him jack? His name was John. I half assumed that is where you were going, but I figured it'd be better to ask considering you didn't provide enough context.