Time for some savagery.

K, I have more than enough energy for this. But we'll save some.

If she wakes up, Yawn her. She stays asleep.

Otherwise....Grab Hard Rock's orb and smash her with it. Save us some energy. Then Thunderwave her. End with Aura Sphere. Smashing the living hell out of her.

Hard Rock~Thunderwave~Aura Sphere.
Sub: Interject Yawn with whatever move she awakens on.