I have to go back to somewhere half way in the game or something. If not everyone is loyal then the unloyals will die, no matter what. Only problem is the fight with Miranda and Jack happened so early in the game for me there was no way I could have kept them both loyal. I never got to 100% Paragon before the end to win Miranda back either. There is a part where you can get infinite Paragon though, so Im going to do that.