Why did Jadis threaten Rick and Michonne that she would have them killed if they tried to escape? Why does she not want them to escape/why does she care if they leave? Would them escaping ruin her deal with the CRM leading to them kicking her out (but they don't let people leave so that doesn't make sense)? Or would she be actually worried that them going to Alexandria would bring the CRM there to attack the community and that would endanger her ex boyfriend Gabriel Stokes? What is her reasoning?