My first instinct when listening to the tape, was Gen Kelly seemed to suspect she was taping the conversation. Of course if she was viewed as a plant to begin with, taping would have been a given. As a matter of fact, everyone was probably acutely aware of any conversation with her. She's a dirt bag, but a useful one.
When you have a leak, first thing you do is tell variations of a story to each person. Then depending upon which variation leaks out, you have your leaker.