Donna took some solace in the fact that she had probably saved Jon's life. She just hoped that didn't mean yielding her own. Metallo was far more agile than she gave him credit for, a fact that made her curse herself mentally. [i]Son of a Sire. I should have seen that one coming. There's a reason this creature can hold his own against Kal-El.[/i] Donna's training kept her mind analyzing, working through the problem as Metallo started to squeeze the life out of her. Anyone with less force of will or discipline would have started panicking. But Donna had been taught by the best. She did not panic. But her options were limited. She couldn't reach any of her weapons, her dagger was uselessly locked in her hand and against her side as Metallo squeezed. She couldn't strike with her knees. There was no point in wasting precious air by flailing around. It was getting harder and harder to keep her head clear as the pain built up. But as she had learned to hold her breath quite longer than any normal man could, she had at least a little time. Think, Donna, think. What would Diana do? 

Donna realized she had one advantage over Metallo. Flight. Troia had honed her senses and situational awareness to razor sharpness. As such, she was reasonably sure of her position in the air relative to the walls and floor of the prison, despite being unable to confirm visually. And so Troia, used her mystical sandals to propel the locked pair towards the nearest wall, letting out a mighty war cry and repeatedly headbutting the metallic skull of her foe. It hurt to strike Metallo in such a manner, but the pain was barely tolerable as she kept ramming her hard forehead into him, hoping to disorient him. As she flew into the wall and knocked her head against his, Troia strained and pulled with her arms, grunting with effort as her demigod muscles burned and pushed against Metallo's robotic strength. If she could just get him to ease off just a little bit, she had a chance. 

Donna braced herself, mentally counting down the moments before they hit the wall. The impact made her grit her teeth as she rammed Metallo into the wall at high speed. With one burst of mighty effort, she headbutted him again and tried to break free. Hopefully the force of her blows and strain of her muscles was enough to allow her to disentangle herself from Metallo. If she got free, she would adjust her strategy and pull out her scimitar to fight Metallo at mid-range. If not, Donna would use the last of her breath to push away from the wall with her legs and slam Metallo back first into the ground and pray she got lucky.