I don't GET how she doesn't see that her reconciliation was false. It is as plain as can be. How doe she continue to believe she was remorseful?
To this day the sad clown would insist it wasn't False R and that he had true remorse. In his words he 'put everything' into R. Everything included still fucking around throughout it or at the very least this parasite was doing the spadework for his new host.
There is nothing you can say to make her get it - any of it. Not the hurt, the damage, the devastation or the pit of hell that is realising you were in False R. She just won't get it - ever.