Marina loves bondage. She loves everything that comes along with it. The fact that she has given control of her life over to someone else who can do with her whatever he pleases satisfies one of her deepest need; the need to be used. It does not matter what Cyd Black has in store for her, she is not concerned with details. The big picture is all that matters and in that broad vision, for as long as he has a use for her, she is valuable. If that value is made up in units of pain and humiliation then that is all the better.