Yes, the story had supposedly ended, but I had an idea for another chapter last nigh, so I wrote it.

So this is the last chapter.

Chapter 20: White Feather

Three months passed. Fortunately they didn't have any unwanted visits from angels or any other supernatural creature. They were safe.

Mary was a lot bigger; as she grew up two times faster, she was the size of a 6 months old human baby. Dean had just finished bathing her. It was always a fun time; Mary liked the water and playing with her red starfish toy in the bath. Although Mary was the one in the little blue bathtub, Dean usually got wet too, from the excited splashes of water Mary made.

After the bath, Dean wrapped her in a green towel and took her to his bedroom where he had Mary's clothes. He sat on his bed and dried Mary with the towel. Then he laid her down and put a light blue and pink diaper with white stars. Dean left her like that for a moment.

"Wait here," he joked. As if Mary would go anywhere... But Dean could swear his baby girl understood him, by her blue eyes locked on him.

Dean turned around to pick up her clothes from the top of chest of drawers in his room. When he looked back at Mary, she was sat on the bed, smiling at him. The kind of smile of someone who was deliberately testing their father's orders.

"Very funny," Dean commented, walking to her. She had sat up before in several occasions but no one had ever seen her doing it.

Dean dropped the tiny clothes on the bed to choose which one he was going to dress Mary with first. Through the half open window a cool breeze of late afternoon came in and passed by Dean. He saw Mary also shivering. She even sneezed in a low and soft sound, and then Dean couldn't believe his eyes. A pair of small white wings appeared on Mary's back. Still with mouth half open in astonishment, Dean held his daughter. Her little wings waved gently, brushing against his fingers in a silky touch.

"Guys!" Dean called for his angels that were somewhere in the house.

It didn't take long for them to appear behind him. "What is it, Dean?" Castiel asked.

"Look." Dean turned to them and showed them Mary.

Castiel and Balthazar also seemed surprised, though not as much as Dean, and then the angels smiled, pleased.

Sam and Gabriel walked through the door right after. "Mary has wings," Sam stated in perplexity, looking at his niece with wide eyes.

"Excellent observation skills, Sammy," Gabriel said sarcastically, patting his back.

Of course, being Mary part angel, it was very likely she would have wings.

"Little girl is growing up..." Gabriel said smiling.

Castiel gently took Mary off Dean's hands to inspect her wings closely. He held his daughter against his chest and then he touched softly and spread her pure white smooth wings.

"So... this wings thing. How does it work?" Dean asked. "She can make them appear and disappear whenever she wants, like you do?" He looked at the angels in the room.

"Yes, in future. Right now she still doesn't have much control of her wings." Castiel explained.

Dean nodded, understanding. That explained why her wings appeared when she sneezed. But..."Forgive my ignorance, but I thought her wings would, I don't know, slowly grown up instead of just popping out."

"They have been growing up," Balthazar told him. "Becoming bigger and stronger inside her before being ready to be revealed to the outside world."

"They're kind of amazing," Dean commented.

"Beautiful," Sam added, staring at the little wings.

"Is it just me, or she looks like someone I know?" Gabriel asked, smiling at Balthazar.

Balthazar chuckled in agreement.

"Who?" Dean asked curious.

"Cassie, of course." Balthazar put an arm around Castiel's shoulders.

Dean looked at his daughter; clear skin, fluffy white wings and bright blue eyes. He imagined it was Castiel. "You were kinda cute when you were young," Dean commented.

Gabriel and Balthazar laughed. "Oh, no. He only looked cute," Balthazar contradicted. "He spent the days chasing us and plucking our feathers."

This time was Dean who laughed. Sam also grinned, while Castiel looked a bit embarrassed.

"Cas was a little rebel fledgling," Gabriel added in amusement.

"I hope Mary isn't like that," Balthazar said.

Having to deal with Castiel when he was young and had a thing for wings had been enough. Every time Castiel touched his wings, he plucked a couple of feathers; more if Balthazar didn't stop him. It hurt, especially when he hadn't notice Castiel approaching and wasn't expecting it. Even though, Balthazar had to admit he partially liked it too. He liked when he was flying away from Castiel, and Castiel just went after him and he wouldn't stop. They flew through the whole Heaven for hours, until Balthazar tired Castiel up. Castiel stopped in someone's heaven and sat down. Then Balthazar went to him; Castiel folded his wings around himself, forming a little fluffy ball, and he leaned against his older brother. Balthazar wrapped his wings around little Castiel and they stood like that until Castiel started touching his wings and pulling his feathers.

"I wouldn't count with that," Dean said smiling, looking at Mary touching the tip of her wings with her fingers.

"Great," he said in a mix of sarcasm and sincerity.

Castiel watched his daughter for a few seconds and then he grabbed her hand, the one that was touching her wing. "Her wings are still very fragile," he said. "They shouldn't be exposed for long." Earth hadn't been built for young infants with wings; a lot of things could easily harm the fragile wings or even break them.

"Okay. So we wait until she decides to hide them again?" Dean asked, a bit concerned.

"No, that could take a long time," Castiel replied. "There's a sensitive spot in her wings, like in all angels' wings, that makes her retract her wings." Castiel traced his fingers to the spot where Mary's little wings joined in the middle of her back and gently pressed it. Mary made a little sound and her wings hid inside her body too quickly for anyone understand how that happened.

"Wow..." Dean said, surprised. "Nice."

"So it's like in cats?" Sam asked.

Castiel tilted his head in confusion. "Cats don't have wings."

"No. I mean, kittens usually can't retract their claws, but if you touch under their paws, it makes the claws to retract," Sam explained. "Like a reflex."

"God, you're such a geek," Dean commented.

"Oh," Castiel understood Sam's point. "Then, yes. I guess it is like in cats."

After that they finally dressed Mary.

A month later...

Mary was on the living room floor, over a large blanket, playing with some toys. It was August and it was a hot day, so the only thing she had on was her usual blue and pink diaper. Her white wings were visible and spread. They had grown up, just like she had, but the little wings were still fragile, so Dean was watching her attentively from the couch to make sure she didn't hurt herself while playing.

It wasn't the first time; in previous warm summer days they put Mary playing with fluffy and colourful toys. Feeling free from the restraining clothes, she usually revealed her wings. It was something that she did consciously now instead of accidentally, but retracting the wings was apparently harder. So they didn't make her hide the wings; instead, they let her get used to her wings and learn to control them.

Mary had been playing with stuffed toys in the shape of animals for an hour, some of the toys made a noise when she played with them. After some time it got a bit irritating, so Dean was glad when it stopped. But then the place was too silent. Dean noticed Mary was currently playing with her wings, caressing lazily the feathers.

This had already happened a few times, so Dean already knew it mean Mary was sleepy. "Okay, time for a nap, baby girl." Dean got up, held his daughter and returned to the couch. With Mary against his chest, her head on his shoulder, Dean started singing softly Led Zeppelin to her. She fell asleep no longer than five minutes later, with her wings pressed close against her body.

Dean could lay her in the crib but he let Mary sleep on him. He liked it. Sometimes he kissed her cheek gently, sometimes he brushed his fingers on the soft little white wings... It was nice.

After some minutes Castiel and Balthazar appeared in the living room. The angels sat on the couch, one at each side of Dean, and at the same time the angels kissed Dean's cheeks sweetly. Dean looked at Balthazar, then at Castiel and finally to their daughter. Smiling, his angels leaned back on the couch and snuggled closer to him. Yeah, his life couldn't be better...

THE END

Here's a list of songs I used for inspiration:

Wolfmother - 10 000 feet
AFI - Prelude 12/21
Muse - Feel Good
Cut Copy - Hearts on Fire
One Direction - More Than This
Reef - Place your Hands
The Beatles - Cry Baby Cry
The Offspring - Feelings
Nirvana - Where Did You Sleep Last Night
The Beatles - Get Back
Train - Shake Up Christmas
The White Stripes - Seven Nation Army
Awolnation - Wake Up
Wolfmother - Cosmic Egg
Oomph! – Ready or Not (I'm Coming)
Wolfmother – White Feather