She's a coworker, you know her husband, she knows your wife (-> maybe some of your wife's friends too), you are her supervisor. Let's see, mmmh, what could go wrong?
I think if your idea was to paint the worst conditions to come out to someone, the only thing that would be missing would be your wife not knowing, other than that you got the perfect recipe for a disaster. Or maybe make it even worse by having feelings for this lady (do you?). Because, you know, men can't be friend with women, Harry explained that in detail to Sally when he met her for the first time.