most. She had to act now, while she still had the strength to do so, or Luke would die, too.
Because while the plan she'd come up with might—
Off to her right, his little electric arc welder extended ahead of him like a weapon, Artoo was rolling determinedly along the upper floor ring toward her attacker.
Her first thought was to wonder what in blazes had taken the little droid so long to get his metal rear over to help, only then realizing how little time had actually elapsed since the battle began. Her second, somewhat irreverent thought was to note that Artoo had chosen her sentinel to attack instead of Luke's, and to wonder if the Skywalker tendency toward overprotectiveness had rubbed off on him.
Her third thought was that Luke was right. This might be the break she needed, the opening for her plan to succeed without her having to die in the process.
Maybe.
Artoo was almost to the sentinel now, a bluish spark arcing across the welder contacts. The sentinel was perfectly aware of him, of course; the only question was what it would do about it... And then an image flashed into Mara's mind. A picture of her and Luke lying on the floor amid the tangle of trip cords down there.
She felt herself gasp. Was that a vision of the future, of them lying dead together? Was her plan doomed to failure?
And then the image cleared, and she indeed saw what he meant. Not a vision of death, but a hope of life: Luke's own last-second contribution to her plan.
She felt her teeth clenching even harder, lightsaber still flashing against the sentinel's attacks, and prepared herself. Artoo was almost to the sentinel, his arc welder still sparking—
And with a casual and contemptuous ease, the sentinel swung its left arm over, placed the side of the blaster in that hand against Artoo's dome, and shoved the little droid over to land flat on his back. And for that half second, only one of his blasters was firing.
Mara reacted instantly, letting her right leg collapse beneath her to send her toppling over onto her right side. Luke fell right along with her, his back pressed against hers the whole way down. They hit the floor—there was probably a jolt of pain in her shoulder from the impact, but Mara wasn't aware of it—and Luke flipped over onto his back to face upward toward the ceiling. And with that single move suddenly there were no longer two attacks coming from totally opposite directions. Now, it was merely two attacks coming from a pair of widely spaced opponents, both of whom were effectively in front of him.
And
There was a short, rumbling roar from the big droid—apparently it had enough sentience to be annoyed at having been outmaneuvered this way. But it was also smart enough to know the disadvantage was only temporary, that her lightsaber couldn't harm it directly, at least not fast enough to do any good.