Well, the trick is that Victor realizes that the prisoners are from Eastern Bay and is sure they would no way in hell would have a woman working with them. We never observe a sit down chat where Victor gets a full download of information. It could have happened. But, I remember Victor asking who are these mallers? I think he gets an answer something like a bunch of escaped Prisoners. Like I said, a lot can happen behind the scenes that we do not hear, but on the other hand, victor really jumps to a quick conclusion CJ is not with the mallers.