AN: This is a Lily story. Written for kate-beckett on Tumblr as a Christmas gift. Sorry reviewers.

Sirens and Friends
Post Series.

There was no denying, everything was so much more special with Lily in their lives. Castle had bought the magic back to her life and Lily had bought back the wonder. Kate loved them both so fiercely and some days she didn't think her heart could take much more but then, as was a Castle trait, they both were determined to prove her wrong.

Lily had torn eagerly into her presents, getting the hang of Christmas with every parcel her family placed in front of her. Books, clothes, new toys, puzzle games and all manner of superhero dolls. All the excited squeals and cheers made her family chuckle and smile along with her. Christmas in the Castle loft was always a little crazy and every second was magical. Kate and Castle sat either side of Lily on the floor, delighting with her over every treasure she unearthed, every present unwrapped, as showed her family what she'd uncovered and passed everything to a grandparent or her sister to open for her so they could play.

Castle was particularly excited about the present in front of his little girl. He watched her face closely, waiting for the second she'd realise what was in it. The look of joy, wonder and happiness that radiated from his baby as she screamed, erupting in excitement as pulled the toy police car from the paper made his whole day.
"Dike Mama's!" she exclaimed, throwing herself into Kate's lap. "'ook Mama! Beep beep." She told Kate emphatically, spinning the wheels on the car with her fingers and making what could only be interpreted as siren noises. "Gampa, Gwam, I gots one like Mama. 'Ook Wexie." She said as she held her treasure aloft.

Castle scooted closer as Lily waved the car at him. "Daddy, we catch bad mens now."
Kate squeezed her daughter tighter. She remembered wanting to be like her Mom when she was little and it took her breath away whenever Lily wanted to be like her.
"Hey Lil, it's even from the 12th. Look," Castle pointed to the sides of the vehicle and smiled as he watched Lily scrutinise the detail on it. Not yet able to read though, she looked back up at him. "This says 12. And who is Captain at the 12th?"
"Mama!"
Castle chuckled, watching his wife over their little girls head as she looked at the car again with the same appraising look their daughter had just given it.
"I… When did you do that?" She asked. It had been his idea to buy the toy after Lily had become attached to one that Nick Ryan would bring along on their playdates. She always told Castle she was helping her Mom save the day. They both knew she'd go nut over having her own but when they'd bought it it had been a plain squad car. Now she knew why he'd insisted that he wrap this gift himself.
"The other day when you two were out with your Dad. Needs to be the right precinct if Sweetpea and Mommy are gonna fight crime together, right Lily?"
"Tank you Daddy."
Kate and Lily both beamed at him. Kate leaned over, kissing him softly. Her sweet, sweet man.

Lily played and continued to open presents as the day went on and everyone else exchanged presents while Lily played. She'd delighted in all the dress up clothes and jewellery her Gram had bought her and wanted to read all the books and play every game her sister had bought for her. Kate and Castle would laugh, share a look with one another and encourage Lily to open her next present.

She climbed into her Grandpa's lap and squealed when she unwrapped the purple elephant that would end up becoming her constant companion.
"This is from Grandma and I. Grandma Jo loved elephants just like you do." Jim told her gently as he picked up the elephant and made it dance, much to Lily's delight. "Your Mommy had one just like this when she was little too. Now, this little guy is gonna look after you and be your best friend. Do you like him?"
Lily clapped and grabbed her new friend, hugging him tight. "Wuv him Gampa. Tank you." And every where she went, she dragged him behind her by the ear. Kate and Castle quickly worked out the best way to reattach it a few times in the coming years.

They watched over their daughter, sleeping peacefully in her bed, worn out from the days excitement. Sometimes Kate Beckett could not believe the life she'd made for herself. Wrapped in her husband's arms, watching over their little girl and basking in all that life had given them.

"Do you think it's worth trying again?" Castle whispered.

"If you're happy to deal with the meltdown when she wakes up without them, be my guest," Kate teased. They tucked an exhausted Lily into her bed and she'd been adamant she would not be put down without her new best friend and her car. They'd at least tried to remove the car from her hand thinking she'd fallen asleep but she held tight and refused to let go.
"Nope, nope, I'm good," Castle chuckled. "I know when I'm outnumbered."

Kate chuckled. There was no denying that Lily Castle was feisty and determined.

"Love you my stubborn little princess." He whispered to his little girl, taking Kate hand.
"Merry Christmas, little flower. Love you to the moon and back." Kate leaned down and kissed her on the head gently and followed her husband out of the room, making sure Lil's new star projector was on before they left.

AN2: Happy New Year! Hope 2019 is wonderful to each and everyone of you.

I've got a couple of Christmas stories left to post that I just couldn't finish on time and then I'll be swapping back to the other story series :)