By force of will, Sam managed to bring himself to his feet as he heard Stevie's scream for help. The adrenaline numbed the pain he felt in his leg as he stumbled over to her. His left arm, which was his dominant one, had been broken by the creature's bite, so he held his gun in his right hand as he approached and did his best to keep it steady. His Glock had a 17 round magazine, but he had fired quite a few shots already and was not sure how many he had left.Tears came to his eyes as he saw the beast tearing into her with its claws and teeth while she tried in vain to resist. Once he was close enough to actually hit it only using one hand, he fired, which of course did not kill it, but it at least pulled its attention away from Stevie. 

"GET OFF OF HER!" He yelled, firing another two shots, both of which missed. The beast readily complied, jumping off of her and pouncing on him once more. He managed to keep his grip on his pistol, but the creature was already going for the kill. It slashed his chest once more with its claws, then opened its jaws wide to go for his throat. In a last ditch effort to survive, Sam shoved his hand which was holding the pistol into the creature's mouth, pressed the barrel against the roof of its mouth, and pulled the trigger three times. Each shot penetrated through the bottom of the beast's skull and entered its brain. The rounds could not penetrate the thick, front part of the skull, so they bounced around inside its skull, doing even more damage. Sam's right hand had been badly cut up in the creature's mouth, but when the beast's lifeless body fell limp beside him, he knew it was worth it. 

With the beast finally dead, Sam used all of the strength he could muster to crawl over to Stevie, as he could no longer bring himself to his feet. Both of them were covered in dirt and blood, with open wounds that were gushing forth even more blood. He was staring to feel lightheaded, but he refused to give up yet. He brought himself up to his knees next to Stevie and looked over her rather gruesome wounds. Placing his hand on her cheek, he looked her in the eyes as tears formed in his own. "Don't die, please don't die. I can't lose you." He said in a pleading tone, attempting to put his arms under her and lift her off of the ground, only to collapse next to her himself. "I can't lose you." He repeated, sobbing for a few moments before finally slipping into unconsciousness.