Let her think whatever she wants to think, she wanted to separate right? If she thinks you guys are out on the town chasing women, let her think those thoughts, let her deal with the feelings associated with those thoughts, feelings of loss, fear of loss, etc. That is when she will start reconsidering her separation ideas.
Good job on the IC stuff, you will find that it is a venue for you to talk without being judged, to get a viewpoint from someone totally unrelated to you, someone who has an objective point of view and you will feel some relief by letting all this stuff out of you by talking to someone, a real life person, it does make a difference.