Not sure about that, but I'm sure she has her suspicions; she's not stupid by any stretch of the imagination! She may not know the specifics, but if Fiona's been playing poker with Mom and the Ladies (an ex-dealer at a Vegas joint! LOL) I'm sure she's starting to put two and two together. After all, what other type of woman would work *with* Michael on these dangerous assignments? She's got to know.