Don't worry about it Xanatos, I'll live ^^

Adel was tricked by her own ego, the only reason why she got caught, and the only reason why she lost to Squall and Co is because she hadn't had her powers after her release, which is why she had to draw from Rinoa.

Okay, here is my full proof on ultimecias power.

If Ultimecia can create griever from Squalls mind, she can read his mind then.
And this also means she can animate anything at will.
Ultimecia, while controlling Edea, mind screwed Deling and controlled him, showing her mental possession powers
Edea had Ice, not time and space, so it was Ultimecias abilities that allowed her to walk through walls, phase through ceilings and reanimate statues.
I believe either Ultimecia was toying with the party as much as Sephy was, or she really didn't care to die, as this could have been her overall plan.

Reasons why

1.If she was toying with them, that would make sense why she didn't finish them immediately.
2. If she was toying with them, that would make sense of why she didn't just create a thousand grievers to attack the party
3. If she was toying with them, that would make sense why she didn't go psycho mantis and acknowledge what they would do next, due to her mind reading abilities.
4. I believe Ulty was just trying to put fear into the party as how she introduced Griever, instead of creating something stronger than eden.

1. At the last battle, she said ALL existence denied, she either gave up and just wanted everything dead, or was her secondary plan
2. "Since her plan was to use time compression to become god-like, then delete the current universe and make a new one to her liking, she should of said "[This] existence denied," but denying ALL existence implies that she doesn't even want a universe of her own making anymore and is going to erase everything now, including herself. Her Scan info may be implying this, "Ultimecia, transformed to absorb all time and space. Absorbing all existence as we speak." Presumably she would destroy herself after absorbing everything, thus ending existence."

So, she either has to be playing around with the party, or didn't care to die.