Quote Originally Posted by shinta|hikari
Or for some reason, it would be better to have her dead at that point. Let us not forget that the emperor probably knows about her geass. Also, Marianne did not seem angry for being killed, as if it was part of some plan.
To me Marianne's death was a key point to manipulate Lelouch into becoming that angry rogue prince... And seeing how she was dealing with things, I think Marianne was even the one proposing it...