A Ghostly Angel
Erela's spirit lifted out of her body and she watched the scene around her. Sam was holding her body, crying. Dean's eyes were teary and swollen as he watched his brother. Castiel had his hand on Dean's back, comforting him, but he was staring at Erela's spirit.
"Can you see me, Cas?" she asked. He nodded. Erela walked over to Sam and put her hand on his shoulder and he jumped slightly and looked around. She looked questioningly at Cas who just shrugged. Sam pulled out the knife and laid her body on the ground softly. He wiped his eyes and looked at Erela's bracelet.
"Yes, Sam. Please keep that," she told him, even though he couldn't hear her. He pulled the bracelet gently off her wrist and plucked a long feather out of one of her wings and then turned to Dean.
"So, what are we going to do with her, Dean?" Sam asked. "We can't just leave her here."
Castiel looked at both of the brothers and sighed. "I have to go. I'm very sorry." Erela was confused because he stayed where he was, but Sam and Dean obviously couldn't see him anymore.
"So what now, Cas? Am I just stuck wandering around as a ghost?" Erela asked. The angel shook his head.
"No, Erela. You're an angel again," Cas said. She looked at him, very confused.
"But… I'm not-" she stopped short and put her hand to her head, cringing as the memories flooded back and her ears were opened to the Host of Heaven. "Oh."
"You should go back to Heaven," Castiel told her, extending his wings and preparing to leave. Erela nodded.
"Castiel, wait," she said, grabbing his wrist. He turned to look at her and she let go of his wrist.
"Yes?" he asked.
"Thank you. For everything. For teaching me, for helping me. Even before I was human."
"Ah, so you remember that." Erela nodded, smiling. "Well you're welcome."
They both extended their wings and flew away, not knowing when they would meet again. Sam and Dean were still trying to figure out what to do with Erela's body.