Morgan you need to retract your comment and get off your high horse. No one was being rude.
She is obtained by following quests provided after you beat Mal II. No exploit or cheat
If she is not suppose to be in your formation then Ucool needs to fix the game so that she can't be obtained.
Also it would help if Ucool removed her from the replay examples that they provide. This only helps to confirm that there is a legitimate way to obtain her.
Give the guy a break! He's lost months of work and been financially penalized through no fault of his own.