Unfortunately I think you are rightKatherine could easily say no. I know it's easy to say she's the victim in every thing, how she's being "taken advantage of" ,yet, she doesn't stop it. She continues to be involved in these things without any real resistance from her. She's not an idiot, she can make her own decisions. This is only an assumption that she knows nothing about the people she's working with. I'm pretty sure she has an idea of their history..
Perhaps Katherine, like Joe, is interested in making money as well?