Mara powers through brick fragments and being Force Pushed into a wall

Jacen Solo wasn't ready to die, not now, not so close to his ascendance, and not in a stinking drain like vermin.
He deflected the energy bolt with one last surge of the Force and sent the rubble erupting off his crushed and bleeding body like a detonation. Bricks hammered the walls and rained fragments, knocking Mara flat like a bomb blast. She made an animal noise that was more anger than pain and flailed for a moment as she tried to get up.
The effort froze Jacen for two vital seconds. But he knew if he didn't get up now and fight back, Mara would come in for the kill, again and again, until he was worn down and too weak to fend her off.
He scrambled to his feet, staggering more than standing, and suddenly understood.
It was Mara who had to die to fulfill his destiny.
Killing her was the test: the words of the prophecy were meaningless, and at a visceral level he knew that her death was the pivotal act. He didn't know how, and this wasn't the time to stop and think about it. He surrendered totally to instinct for the first time in ages. Whatever guided a Sith's hand had to guide him now.
But he was hurt, and badly.
Ben ... he didn't know where Ben fitted into this, but now he knew he did, as surely as he knew anything. Jacen didn't care, because he knew he had to kill Mara now and nothing else would make sense until he did that.
He fumbled for his lightsaber and thumbed it into life again. Mara was already back on her feet, coming at him with the shoto and vibroblade, brick dust and black-red blood snaking down her forehead from a scalp cut. She leapt at him with the shoto held left-handed, fencing-style, seared the angle of his cheekbone, and caught him under the tip of his chin with the vibroblade as he jerked back.
She shouldn't have been able to get near him. He had total mastery, and she was just athletic and fast. He pushed back at her in the Force, sending her crashing against a wall with a loud grunt, but she kept coming at him, one-two, one-two with the shoto and the blade, and he was being driven back, his strength ebbing. He needed space to fight.