Sister?

Reunited

As Sam and Dean entered the bunker they were surprised to see Charlie waiting in the library. "What's up bitches!" she said and they came down the stairs.

"Charlie, what are you doing here?" Sam said as he hugged her. "Just thought I would stop by." She looked over to Carmon.
"Who's this?" She gestured to Carmon. "I'm Carmon, and you are?"

"Charlie, so how do you know Sam and dean?"
"Well I don't really, I just met them." Charlie looked at her suspiciously. She turned to Sam and Dean, "She's our sister." Sam said calmly.
"Excuse me, your what?!" she looked at them and shock.
"I should leave you guys to talk," Carmon said, trying to step away, but was stopped by Dean's tight grip on her arm. " Whoa, you're not going anywhere," he said as he sat her down. "Start talking!" he said with a slight yell in his voice.
"What do you want me to say?!" she yelled. "Oh, hi! I'm Carmon, I'm your little sis! Let's chat!" She said sarcastically.
"Can you just tell us about yourself?" Sam asked calmly. "Ok, I was born on September 19, 1991, I'm 21 years old, I'm a nurse at the hospital here, I never knew my dad, ok? Does that simmer things up?" She was starting to look annoyed.

"Sam, Dean, I need to speak with you." A voice said behind Carmon witch startled her. She turned around at the familiar voice, she stared at Castiel with wide eyes, which were starting to fill with tears. "Castiel?" she said barely a whisper. Sam and Dean looked at Carmon then at Cas.
Castiel looked at her in shock, he was frozen and he couldn't move. "Carmon?" he asked with a crack in his voice, Carmon slowly started walking to him, but found herself running into his arms sobbing uncontrollably, Cas hugged her tight, tears starting to fill in his eyes. Sam, Dean, and Charlie just looked at them confused.

"Oh my god! Oh my GOD! I thought you were dead!" she exclaimed, still crying. He looked at her wiping the tears from her eyes, "I'm so sorry, Carmon." he said, moving the hair out of her face. "Um, sorry to break up this moment but, how the hell do you know each other?" Dean asked. "Oh um," she sighed, wiping the tears from her face. A few years ago Castiel saved my life. I was being attacked when he ran over and helped me. Then he raised me then he disappeared, I thought they killed him, but-" she looked at cas with a wide smile, you're here now." She hugged him so tight, he hugged back. He never wanted to let her go EVER again.