Good advice given already. Take a cue from mental health practioners - ask leading questions, rather than make comments.
Ex: "How do you feel about that?" "When you think about FS, how do you feel?" "When he says that, what do you feel?"
Use this tack judiciuosly, sparingly - otherwise it can be quite annoying. Silence is good, too, especially face-to-face (not so much on the phone) and sounds of acknowledgment, "Oh" "yes" "hmmm" "really?" "ahhh" "uh huh".....you get the idea.....................
The whole idea is that she has to see the "light" for herself, and not feel coerced.
PS. Has anyone noticed that trolls don't really read, they just post and leave?