One-shot based on this prompt from always-stana-castle on Tumblr: Alexis-Beckett moments :) thank you!

"It's so good to be home finally," Kate sighed as she sat down on the couch in the loft. She stretched her arms over her head and let out a long yawn. Alexis sat down next to her.

"So, how do you feel?" the young girl asked her stepmother with a hopeful smile.

Kate smiled. "Honestly, I've never felt better." Alexis skeptically raised an eyebrow. "No, really!" Kate laughed. Just as she was about to explain, Castle walked into the living room, having unpacked their bags. His hair was tousled in just the way Kate liked it and he had changed into pajama pants and a white t-shirt. He looked adorable.

But what made Kate's heart flutter at the scene was the tiny baby Castle cradled in his arms. He walked over and sat between his daughter and wife, making careful movements so as not to wake the baby.

Alexis reached over and gently brushed her thumb over her brother's nose and mouth. "I just can't get over how cute he is," Alexis whispered.

"Me either," Castle grinned. "He's absolutely perfect." After a minute of silence consisting of staring at his son, Castle handed the baby over to his wife. He stood up and yawned.

"I'm gonna head to bed. G'night." He leaned down to kiss his daughter's head followed by Kate's.

"I'll be there in a minute," Kate called as he exited the room. She stared down at her precious baby.

"So are you going to go back to work soon?" Alexis asked quietly.

"Yeah I'll be back in a few weeks. It just sucks knowing how much I'm going to miss while I'm at work every day. I'm scared he'll grow up thinking I love my job more than I love him," Kate confessed.

"Kate," Alexis said. Once her stepmom looked up at her, Alexis continued. "There's no way Dad will let him grow up thinking that. You and I both know he's going to tell this little guy about you all day long."

Kate smiled, because she knew Castle would do just that. "Alexis?" Kate asked. Alexis hummed her response, so Kate continued. "Would you like to watch him sometimes? I just... I want him to be close to you."

"Of course!" Alexis beamed. "I'd love to be as big of a part of Charlie's life as you'll let me."

Kate handed Charlie over to his big sister and stood up. "I want him to grow up and be just like you, Alexis." Kate leaned down and gave Alexis a one-armed hug. Alexis gently rocked her baby brother and kissed him on the forehead. She cautiously stood and handed Charlie back over to her stepmother.

"Goodnight, Kate," Alexis said as she walked towards the door.

"Night, Alexis," Kate yawned as she walked to her and Castle's room. As Kate reached the door to the room, she heard the front door close.

"Hey little guy, time for bed now." The baby began to fuss. "Don't worry Charlie, your big sister will come visit soon." The baby stopped crying and his eyes fluttered closed. "That's right buddy, you have the best big sister ever. And the best Daddy ever. I love you, Charlie," she whispered as she lowered him into his crib and then proceeded to climb into bed.

I know this was short but send me more prompts please and thank you! :) All reviews are welcome!