A/N: As soon as I started writing this chapter, the song Devil's Backbone by The Civil Wars came on Pandora. Coincidence? I think not! I suggest listening to it while reading this chapter. This chapter may be a little short, but eh, they turn out that way sometimes.

Chapter 13: Cost

"No, you're not going. That's that!" Dean shouted.

"But I could help!" Lumina protested.

"Cas!" Dean yelled.

Lum folded her arms as Castiel appeared in her room. "What is it?"

Dean smirked. "I'll let her tell you. Good luck, sunshine!"

Dean slammed the door on his way out, leaving a confused Castiel and a headstrong Lumina alone.

"What was he wishing you luck on?"

"I want to go with you guys." Lumina said firmly. "I want to help kill the devil and end this misery!"

"No!"

The loudness of his voice startled her. "Why not? I have abilities to protect myself!"

"Lumina, your abilities are barely working since the last time you used them. You are still weak."

"I'm no weaker than them!"

He suddenly grabbed her by the shoulders and pulled her against him. "When will you realize we can't loose you?"

"I feel the same way! I want to be there to protect you guys, you idiot."

"I'm an angel of the Lord, I can protect them and myself."

"So I'm supposed to sit here and fiddle my thumbs to see if you guys die or not?"

"Think of it this way, if something does happen to us then you are the last one that can stop all of this."

Her lips trembled as tears fell from her eyes. She clutched to his trench coat as she sobbed. "I can't…don't leave me, please!"

His arms wrapped hesitantly around her. "I have to do this."

"I know."

"I need to know that when this is all over that you are safe."

"I don't think I can live on if something were to happen to any of you."

Her face tilted upwards to his. It was the first time he kissed her without being gentle. His hands molded into her hair as he merged them. They were both panting when he pulled away.

"Promise me you will come back," She demanded.

"Lumina, I can't…"

"Promise or I will be there too! You know I can!"

"Lumina you haven't done that since the vampires nest. If you do it again, you could end up in front of Lucifer and dead before you speak!"

"I will find a way," she whispered. Her lips slowly began to graze his. "Promise me, and I will stay right here. Promise."

"I promise."

Their kisses were becoming more heated as Lumina began to tug him to the bed. She knew what would have happened next if Bobby hadn't yelled for them. Dean only gave her a wan smile as they lined up for pictures. Her hand was still holding Castiel's as the camera snapped. She was going to lose her whole family in one night.

Lumina paced the floor at Bobby's, gnawing at her lip. It was when the radio went off that her whole body froze. Bobby answered it, his face paling. Jo was hurt, probably close to death. Lumina wasn't going to let that happen. She closed her eyes, determined to save the young girl. She controlled her breaths, picturing Jo in her head. If it took everything she had, she was going to do this.

She felt her body collapse into something hard with metal. Her eyes flashed open to see that she was in a hardware store.

"Lumina?" Ellen asked.

"Yes," Lumina quickly stood and walked towards Jo. The girl was losing to much blood and needed a hospital quick.

"Lum, what the hell are you doing here?" She heard Dean yell.

Lumina placed a hand on Jo's cheek, watching the girl trying to smile. "I'm going to get Jo to a hospital."

"How can you do that?" Ellen asked.

Lumina felt her body bristle with determination. "I'm just going to try."

She placed both hands on Jo, thinking of the hospital near Bobby's house. She had to do this, she had to save a life. If this was what she was created for then this had to happen. She felt her breath quicken and her heart trying to beat itself out of her chest. The air escaped her lungs as she collapsed onto cool concrete. She opened her eyes to see Jo cradled beside her, barely hanging on. Lumina lifted the girl the best she could, barely able to carry herself. The hospital was thankfully in front of them.

"I need help!" Lumina screamed as they limped into the hospital

Nurses rushed towards them, quickly placing her on a gurney. Lumina was barely able to watch them rush her off to the ER before she collapsed against the wall. Breathing was becoming more difficult, her head spinning. A young nurse walked towards her.

"We need to know what happened," The woman said patiently.

Lumina searched her rabid mind. "We were in a park and she was attacked by a dog."

"Are you okay?"

"Don't worry about, me just help her!" Lumina yelled, startling the poor lady.

Lumina sat in the waiting room for hours trying to calm her nerves and waiting on news about Jo. She had called Bobby, telling him what had happened. He still hadn't heard back from the boys. Her mind began to question on why Castiel hadn't been there to help them, but she couldn't dwell on that right now. It was late when a doctor finally came up to Lumina.

"Are you related to Miss Harvell?" He asked.

"I'm her cousin." Lying was becoming way too easy. She doubted the doctor truly believed it, but he continued anyways.

"She's in critical condition and she lost a lot of blood. We have her in a room."

"Can I see her?"

"She's unconscious, Miss…"

"I don't care,"

The doctor nodded sympathetically and led her to the room. Jo looked so small in the hospital bed, barely any color to her skin. Lumina felt her heart tighten at the sight of the breathing tub and wires attached to the poor girl. Lumina didn't know Jo that well, but she was still part of her misfit family.

"Is she…is she going to be okay?" Lumina asked, her hand reaching out to gently touch Jo's.

"We will have better answers in the morning. Right now, it's time."

Lumina nodded, sitting into the chair beside the bed. She silently dared anyone to try and move her. She laid her head on the bed, her hand still holding onto Jo's. She didn't know she had fallen asleep until she felt a hand gently shake her. Her mind gather to see Sean standing beside her.

"Thank you," He whispered, tears bordering in his eyes.

Lumina nodded with a wan smile. Her head turned to see Ellen on the other side of Jo sobbing. Lumina decided it was time for her to leave. She left them quietly out of the room with only one last look.

Lumina stayed curled up into herself on her bed, her eyes focused out the window. Her body couldn't stop shaking and her mind continued to race. Sam and Bobby had tried to talk to her, but she couldn't speak. Everything was clicking too quickly. She heard Castiel enter the room, but she wasn't ready to look at him.

"You saved Jo," He stated.

No response.

"Lumina, you did something you should be proud of. What's wrong?"

It was hard for her to force into words. She had saved a life today and didn't even care about her own. This was what she was meant to do, save people that she didn't even know. If the prophecy about her life was right, then she was supposed to protect and save everyone, not just her loved ones. The responsibility felt heavy on her shoulders, making her wonder if she could do it.

"Lumina," He sat beside her, his hand reaching out to touch her. "It is normal to be scared."

Her eyes finally met his, they were almost life less. "I'm more than scared. I can't stop thinking of the cost."

"The cost?"

She shook her head, tears falling. She leaned over and pressed her lips into his. She needed something to hold onto.