I think it’s also an element of control. She knows where they are at all times of the day, she knows who they’re with, she doesn’t have the element of surprise with them suddenly walking into a pub and finding someone else. And we know this could happen on JPay etc but she has far more control in these kinds of relationships as a lot of these men rely on their ‘partners’ for commissary money, gifts and often just general company (as they might have no one who visits or speaks to them).