You may discard this as you see fit, but I submit for your consideration:
Dean and Cas bringing baby Hael home from the hospital. She’s still tiny and wrinkly, kinda squashed and pink. She’s already got Cas’ squinty face down to an art and she’s not even a week old. Dean personally thinks that’s impressive.
Emma got to meet her baby sister for the first time just yesterday. She’s been so excited (no sign of that sibling rivalry bullshit, not yet, anyway), just bright, vibrating excitement. Cas held both of his daughters while Dean stood beside him, a hand on Cas’ shoulder, another on Emma’s hair, smiling down at the new baby, with something in his eye.
Emma is jumping at the door, bouncing on the balls of her feet, eager to help, wanting to be an awesome big sister. As fare as Dean is concerned, she’s already at least halfway there just by opening that big old heart of hers.
Sam and Sarah coo over the new baby. They stay and take pictures and congratulate everyone and take their turn holding her.
Emma gets tired of the grown up formalities and bullshit. She wants to play with Hael, and when Sarah and Sam leave, hugging everyone with extra kisses for Emma, she says as much, straightforward and determined, with Cas’ firm tone and Dean’s stubborn chin. She’s a force to be reckoned with, their kid, and Dean tries to hide a smile. Cas responds first, he opens his arms for her to climb up onto his lap, cuddling her close to his chest. He reminds her gently that Hael is still too small to play knights or dress up, she needs to get bigger before she can color or climb trees. Emma looks so damn sad, disappointed, put out. Dean immediately moves to comfort her, but Cas catches his eyes, and nods in the direction of the bassinet before Dean can intervene. He knows (without knowing exactly how he knows) what Cas is up to.
Dean gently scoops the baby up into his arms. She’s so tiny, this new daughter, her head barely fills his palm. Her tiny mouth works and five of her little fingers curl instinctively around one of his. It’s amazing to think that this tiny person, this little life, has been entrusted to him, to care for and love and protect. He barely knows this new girl, but, if the lump in his throat and the warmth in his heart is anything to go by, he loves her already. He smiles down at her in his arms, and then walks over to where Cas and Emma are sitting together on the couch. It wasn’t so long ago, he thinks, that Emma was this little…
Cas smiles at Dean, soft, and strong, and Dean is floored, yet again, by how much you can love someone. Dean sits right up next to him, so that Emma is sandwiched between them. It’s not uncommon to make an Emma sandwich, Dean and Cas, hugging her from either side amongst bright peals of laughter, what’s different now is that they’re adding a new element to that.
Cas gently runs a hand against’ Emma’s hair, presses his forehead gently against her’s. It is important, he explains, for sisters to get to know one another despite age discrepancies (yes, Cas, talks like that to their five year old).
Cas presses a kiss to Emma’s forehead, and Dean helps Emma get situated between them before he gently places Hael in her arms. He helps to steer her posture, adjusts the positions of her hands. Emma’s eyes are round as saucers, her mouth parted in surprise, before she bites her lip as if she realizes that this is a Big Deal, Dean and Cas share a grin over her head. Hael, to her credit, doesn’t fuss at the transfer, she just blinks up her big sister, with a tiny scrunched up face.
“Hello, Hael,” Emma says, because there are somethings that she’s picked up from Dean, but the idea that introductions are very important is something that she imbibed from Cas. Dean finds this incredibly ironic and teases Cas about it (out of Emma’s hearing of course).
She doesn’t look up at either of her parents for guidance, but continues, voice hushed, because she learned from her teacher that you have to be careful not to be too loud around babies because you don’t want to hurt their ears and had spent three months lecturing Dean about his music volume, much to Cas’ amusement, “I’m your big sister,” she says it like it’s an title, like she should have a diploma and some business cards to that effect, proudly proclaiming her as Emma Grace Winchester, Official Big Sister. It’s maybe the cutest fucking thing Dean has ever seen, and Emma has been his kid for going on six years now, he’s seen some cute fucking shit.
“I’m going to take very good care of you,” she promises and then presses a very firm, very official kiss on her forehead.
Dean bites his own lip against that sudden burning in his eyes, and he feels Cas’ warm fingers against his cheek, meets Cas’ moist eyes over their daughters’ heads. He feels complete.