Feather
-Scenario where Castiel gives his "niece" a feather from his wings-
"Mary, Uncle Cas is here!" Annabel called up the stairs.
"Uncle Cas!" a four-year-old squealed, running to the top of the stairs.
"Slow on the stairs, Mary Lucille." Annabel said firmly. "And hold the railing."
The little girl that was the spitting image of Annabel did as she was told then ran to Castiel when she reached the bottom. He was standing in the living room with Dean.
"Hey sweetheart." Dean smiled and bent down to hug her, she normally ran right into his arms, but she bypassed him and jumped into Cas' instead.
The angel smiled as he picked her up. Dean frowned as he stood up straight and folded his arms over his chest. He liked having Cas around, especially where the visits were rare since he was working on repairing Heaven, but he hated how his daughter, his little girl – daddy's little girl – completely ignored him when the angel was around.
Annabel walked over to them and stood by Dean, smiling at the sight of the two of them. "So, how long are you here for?" she asked.
"A week." He replied, holding Mary a little tighter. He missed her when he was away, though he would probably never admit it to anyone but the child herself and perhaps Annabel. "I have a gift for you, little one."
Mary's eyes lit up. "Really?" she asked hopefully.
"Yes." He smiled slightly and set her down. He reached into his trench coat pocket and pulled out a chain with a locket on the end.
She smiled brightly. "It's so pretty, Uncle Cas!" she looked closely as he crouched down next to her and showed her the gem in the center. "It looks like its glowing." She said quietly.
"It does have a faint glow." He replied. The stone looked like an aquamarine stone. He opened the locket and showed her what was inside. She gasped. Annabel and Dean looked slightly surprised, too. "This is a feather from my wings. It's one of the smaller ones, clearly," he paused. "But as long as you have it, you will be safe and I will always be able to find you and know where you are." He told her gently.
"Cas…" Annabel said quietly.
He looked up at her and Dean. "I know you fear for Mary's safety." He said. "It may set all of our minds at ease to know that I can easily track her location."
She smiled faintly. "Thank you, Cas." She said as she grabbed Dean's hand.
Dean swallowed. "Yeah, thanks." He said.
"Can I put it on?" Mary asked hopefully.
Cas smiled and closed the locket then slipped it on over the little girl's head since the chain was long enough to do that.
"Yay!" she jumped around. "Am I pretty like Mommy, Daddy?" she asked, grabbing Dean's leg.
"You're always pretty like Mommy." He replied, smiling at his daughter.
"Remember, Mary, you must never take this off." Cas told her.
"What?" she frowned, looking alarmed and heartbroken. "But then you'll always win at hide-and-seek!"