Responses
Her reaction, I think. If he had killed the husband, she would be less willing to go along with what he says. She would hate him more than she already does. By leaving the husband alive, he can appear (somewhat) merciful and get cooperation out of her at the same time.
not trying to be weird here but his plan is kinda inefficient...
why didn't he just kill the husband and then swoop in and get the FL?
He already is isolating her from everything lol what stopped him from killing the husband?