Libby waited in the car for Sam and Dean, checking the time on her phone. "They should be here by now," she muttered. Suddenly a wave of dizziness hit Libby, the girl slouching over in her seat. "What?" she whispered. Libby pushed open the door to the Impala, stumbling out of it and over to the trunk. "Sword," she muttered. "I-I need the sword." She managed to pick the lock to the trunk, opening it just as she fell on the car. Her gaze drifted to the box containing her sword and she ran her fingers along it slowly, watching the Enochian symbols glow brightly.

"Libby?" Dean asked.

"Libby!" Sam yelled, the brothers running over to the girl. The feeling of exhaustion rushed over her and she slumped down to the ground. "Libby, what's going on?" Sam asked, crouching down to her level.

"Power," she whispered. He stared at her in confusion.

"Wh-what?" She gulped, trying to stay awake.

"Power. S-sword. I need it," she managed to say. Dean lifted the lid of the box up the rest of the way, grabbing the sword and handing it to Libby. Just as she clutched the hilt, a bright light surrounded her, Sam and Dean shielding their eyes. Libby felt some of the energy in her restore, but most of the fatigue was still there. Her grip on her sword tightened.

"What happened?" Sam asked her, helping her up off of the ground.

"I think that if I'm away for too long then I lose my power," she started to explain. Libby stumbled, Sam catching her. He slid the sword in its sheath, tightening it around her waist over her nurse scrubs. "It's the source of my power." Her words were slurred, almost as if she were drunk. Sam and Dean exchanged wide eyed glances before Sam picked her up and slid her in the backseat of the Impala, getting in next to her.

"And if you don't have it?" Sam asked her as Dean started to drive. Libby tilted her head up, staring at Sam's face.

"You have pretty eyes," she whispered, smiling slightly. Dean stared at her in confusion in the rearview mirror.

"Libby, what happens if you're away from the sword for too long."

"Oh. Uhm, I die," she said as if it were nothing. "But that shouldn't happen. Not as long as we gank my dad. We're gonna do that, right?" Sam sighed, pushing a few strands of her hair out of her face. She smiled up at the younger Winchester.

"Yeah. Yeah, we'll get him. I promise," Sam told her. It was an empty promise. Anyone could tell you that. But Libby believed it. No one knows if it's because of the delusional state she was in or if it was how gullible she was when it came to the Winchester brothers, but she believed she could defeat her father.

"Hey, Sam?"

"Yeah?"

"Thank you." He stared at Libby. "For taking me in. For defending me whenever Dean wanted to kill me or just leave me on the side of the highway." She chuckled. "I wanted to kill you and now..." Libby trailed off, struggling to keep her eyes open.

"Now what?" Sam questioned, curious as to what she'd say.

"What?" Libby asked. Sam sighed, knowing that he wouldn't get an answer out of the girl.

"Nothing," he told her with a small smile. "Just sleep." She nodded and laid down further, resting her head in his lap. Dean and Sam exchanged glances in the mirror, Libby passing out as soon as her head hit Sam's thigh.

Libby woke up groggily, her neck stiff. She let out a groan as she sat up, still feeling a bit lightheaded. Sam lifted his head up, looking at the girl through squinted eyes. "I was wondering when you two would wake up," Dean commented, handing a coffee to Sam as he got in the Impala. Sam accepted it, not hesitating to take a sip.

"What is that? It smells gross," Libby said, rubbing her neck. Sam and Dean exchanged worried glances. Libby normally loved the smell of coffee, but today it was just making her sick. She cringed, wrinkling her nose at the smell.

"I-I got you a bagel," Dean said, holding the bag out to the girl. "And some hash browns. I know you love hash browns." Libby shoved the bag away, lying back down. "Holy crap, how sick are you? You just turned away food!" Dean pressed the back of his hand to her forehead, only for her to smack his hand away. "Ow! Bitch!"

"Dick," she grumbled. Sam raised an eyebrow at her choice of word, taking an awkward sip of coffee. Dean grunted and got in the front seat, setting Libby's bag of food in the passenger seat.

"I'm calling Cas!" Dean announced, whipping out his phone. "There's definitely something wrong with you."

The knock echoed throughout the motel room, Sam racing out of his seat to open the door. Cas stood there, adjusting his tie, before walking in. "How is she?" he asked, heading straight for the girl sleeping on the bed. Dean shook his head.

"She's not eating. She can barely get out coherent sentences. All she does is clutch her sword and sleep. She won't eat, Cas. Libby always eats," Dean yelled out in a frenzy, waving his arms wildly around his body. Sam and Cas stared at him, both of their heads tilted in confusion and curiosity. Cas shook it off immediately, sitting on the edge of the bed next to Libby.

"Libby?" Cas asked. She groaned and turned onto her left side away from the angel. "Libby, it's Castiel. What's wrong?"

"I just need to recharge. That's all." Cas frowned in concern. Libby wasn't supposed to have to recharge. She was supposed to be an invincible warrior. Cas snatched the sword from her grasp, studying it.

"Something's wrong."

"No shit, Cas," Sam snapped. Castiel looked up at Sam in shock before looking back at the sword and shaking his head.

"No. Something is definitely wrong. Not with the sword, but with Libby. The sword should be healing her, but it's not. It's almost like-"

"Someone poisoned her," Dean finished. Cas nodded. Dean snapped his fingers, pointing to Sam. "That night at the pub. Meg was there with her. Maybe she did something."

"Why would Libby be out drinking with a demon?" Cas questioned. Sam shrugged.

"I don't know. She just kinda took off. Meg probably tracked her down," Sam replied. Castiel nodded, the situation making sense to him now. "What's strong enough to poison the daughter of Lucifer, though?" The three of them stood there in thought, clueless, while Libby groaned and rolled onto her back, catching her breath.

"Demon blood," she managed to say. Libby opened her eyes, sitting up halfway, and staring at the men. "Meg saved my ass and there was blood. I-I think she got it in my system somehow." Dean furrowed his eyebrows.

"Saved you from what?" he asked.

"Some human. He tried to, uh, rape me, I think," she said slowly, her words all slurred together. Sam raised his eyebrows in shock. "I was w-weak. Couldn't f-fight him off. She showed up and killed him." Castiel slid the Sword of Elizabeth in its sheath, leaving it on the bed next to Libby.

"Why would demon blood be poison to her?" Sam questioned, knowing that Libby was in no such position to answer.

"She's the offspring of two pure celestial beings. Lucifer was pure at the time Libby was conceived. Her time in Hell could take affect on her and reverse the effects of the blood, but for now impure blood could, in fact, kill her if enough is ingested. She looks like Hell but I think she'll be okay. It just needs to make its way out of her system," Castiel explained. Libby held up her thumb as if confirming Cas' explanation before it fell to her side limply a few seconds later. Sam frowned at the ill angel, wishing that he could help. They needed Libby alive and strong. They needed Libby to win, but Sam also felt some sort of connection to her. His only worry was Libby getting better so that she could live, not so that she could defeat the devil.

"Thank you, Cas. Really," Sam said. Cas nodded.

"Would you like me to stay or-" Dean shook his head.

"Nah. We'll call you if we see things take a turn for the worst. Thank you again." Cas nodded and disappeared, leaving only the sound of his wings fluttering. "I'm gonna go take a shower. I feel and smell like crazy," Dean announced before disappearing into the bathroom. Sam crawled onto the bed next to Libby, placing the sword at her feet.

"How're you feeling?" Sam asked Libby softly. She shrugged as much as possible, which wasn't a lot.

"I've definitely been better," she whispered. Sam nodded, playing with her hair. Libby just watched him, studying him. "Talk to me. I need to stay awake."

"What do you want me to say?" Sam muttered, not looking up from her orange hair.

"Who's Jessica?" Sam's eyes snapped up to Libby's, a sad look taking over his eyes.

"How did you-"

"Books," was all Libby said. Sam nodded.

"You didn't get very far then," Sam commented. Libby shook her head. "She was my girlfriend at Stanford. When Dean dropped me back off from the hunt she was killed by the demon that killed our mom; Azazel." Libby's eyes widened. "You know him?" She nodded slightly, opening her mouth to speak when Sam stopped her. "Don't speak. You don't need to tire yourself out anymore." Libby nodded again. Sam and Libby sat there in silence, neither of them knowing what to say. It wasn't until Libby started to drift off when Sam noticed the marks on her arms. Some were burn scars, other were cuts. Sam hadn't noticed them before because of the red leather jacket that Libby always wore. "What's all of this?" he whispered, Libby's eyes fluttering open.

"I told you, Sam; my father never stopped trying to get me on his side. Demons tortured me, hoping I'd say yes, but it never happened." It took about a minute and a half for Libby to say those two sentences, her voice soft and broken. Sam's face fell, his finger tracing the scars. "It's okay. It's over." There was some strength to her voice, but not a lot.

"Libby-"

"Shh. Let's just sleep," Libby decided. Out of instinct and nature, Sam pulled Libby closer to him, the girl curling up into his side and using his chest as a pillow. She drifted off instantly and Sam following not long after.

Dean walked out of the bathroom, his gaze landing on Sam and Libby immediately. Their relationship was growing stronger, something Dean knew couldn't happen. It was too much of a risk for everyone. Dean sighed. He couldn't wake up Sam. Both brothers rarely slept and the couple hours they did get every few nights were filled with nightmares and hard beds. Sam looked peaceful for once. Dean wondered if Libby dreamed, and if she did, what she dreamt about.

Crawling into his own bed, Dean turned off the single lamp in the motel room before finding himself fast asleep for the first time in weeks.