
Originally Posted by
PuPu
What do you mean that we aren't given a reason? Have you been paying attention at all?
In the game, it was said that she wanted to kill all SeeD, because SeeD was opposed to her. But in her time, all the SeeD have been killed, and she already had control of the world.
So she really didn't have much of a reason to try to compress time. She wanted to make it so that SeeD never existed apparently, which eventually led to her downfall, because the SeeD in the present discovered what she was planning, and Ellone sent Squall and co. to the future, and Ultimecia was defeated.
But you're right, she's such a horrible villain.