I don't think she knew much at all about what happened with Joan last season. Remember how completely broken she was? No way was Thursday going to tell her anything that would upset her.
In the Charlie episode this series, I believe Fred Thursday said that he would have to check with Win before making a major loan. I had the impression at the end that he had actually talked with her -- something she said at the end like, "well, that's that, then." Now I think it just meant, "there they go," but at the time, I think we were meant to think (at least, *I* thought) she was saying, "well,