For reference, the dwarfling is about 4-5 in human years.

Blue Eyes and a Golden Crown

Thorin sighed as he gently lifted the heavy gold crown from his head, placing it on the low side table next to the throne. He had spent the entire day listening to the petitions of the people of Erebor – dwarves that wished to marry, those who had trade issues to resolve, as well as settling the occasional dispute between two very burly and very aggravated, not to mention loud dwarves. Drooping his shoulders, Thorin rubbed his fingers across his forehead in an attempt to dissipate the tension that had accumulated. He groaned as he felt the onset of a migraine and shut his eyes. The King under the mountain was only able to enjoy a few moments of sweet silence before a gentle pat on his knee startled him, his eyes flying open. A soft smile spread across his face as his gaze rested upon the little dwarfling that stood before him, the top of her head barely reaching his knee. The dwarfling smiled shyly up at the king and raised her arms. Thorin instantly placed her on his lap and held her close, placing a kiss on her rosy cheek. The child turned her large blue eyes to rest upon the king and grinned.

"What can I do for you today, my jewel?" Thorin asked, his eyes bright with warmth. The dwarfling snuggled further into his arms and buried her nose into the soft black fur of the king's navy robes, muffling her words.

"What was that, little one?"

"Hiding from Balin," the child repeated quietly. The expression on her face was one of pure innocence, yet a mischievous glint was apparent in her eyes. Thorin almost rolled his eyes, that look was much too familiar to him.

"And what lesson failed to fascinate your interest today, my dear?" Thorin asked, his voice tinged with amusement.

"Don't wanna learn my letters," the dwarfling pouted, eyebrows furrowing in a way that reminded Thorin how much she could resemble his younger nephew. "I want to hear stories about before and play with Mr Boggins!" The child gasped and stared earnestly up at the king, who recalled another time long ago when another blonde dwarling displayed an uncanny interest in history for their age. "Yesterday Mr Bilbo told me about the trolls! Did you really almost get squished into jelly, Gampa Thorin?"

Thorin opened his mouth to reply but was interrupted by a familiar voice. "Dísa! There you are!"

The blonde prince of Erebor strode into the hall, the golden light of the floor bouncing off the walls, causing his hair to appear as if it were made of flowing gold. His blue eyes, a trademark of the line of Durin, displayed his relief at seeing the child who was now bouncing on his uncle's knee. Fili nodded respectfully, smiling warmly at his uncle who returned the gesture, before straightening his shoulders and schooling his face into one that he hoped mimicked his uncle's commonly austere expression, or as he and Kili would call it, their uncle's "grumpy face."

"Dísa, this is the fourth time this month that you have run from your lessons with Master Balin," Fili said firmly.

"But letters are boring!" Dísa squawked, her big blue eyes wide and bottom lip jutting out.

Thorin suppressed a chuckle and glanced down at the little princess burrowed safely in his arms. The king shrugged and drew her in closer, "Let her be, lad," he said, looking down fondly at his grand-niece. "She is still but a wee one."

Fili rolled his eyes and crossed his arms, trying to maintain his stern façade. "You never said that about Kili and I," he protested.

"That's because both of you were miscreants and ran your mother and myself ragged all day, every day," Thorin retorted teasingly. Fili rolled his eyes once more and sighed, allowing a smirk to creep its way onto his face. Thorin absolutely doted on his grand-niece, which at first came as a mild surprise to both Fili and Kili, although not to Dis, for she knew just how soft Thorin had been when both his nephews were younger.

Fili approached the throne and held out his arms, Dísa all but jumping into his embrace. Fili chuckled as he gathered her close and rubbed her tiny button nose against his own. "Come on, my princess, your mother is probably wondering where you are."

"Nála knows exactly where she goes, lad," Thorin said, "she is much sharper than you after all."

Dísa giggled loudly as Fili scoffed, exaggerating his reaction to the mock insult. His eyes narrowed. "You wound me, uncle," he sighed dramatically, grinning as his daughter's laughter sounded through his ears. His eyes filled with affection he ran a palm over her matching shoulder length blonde curls and placed a loud kiss on the crown of her head. He bounced the beaming princess in his arms and with another nod to his uncle, left the throne room.

Thorin watched them go with a proud smile, relaxing back into his throne. He closed his eyes and revelled in the pin drop silence of the golden hall once more before he heard a crash followed by colourful Khuzdul curses coming from outside the throne room. "Kili," Thorin sighed as he stood and shook his head, making his way over to where his nephew had undoubtedly knocked over yet another ancient decorative ornament. Sometimes, dwarves never did grow up.

Thank you for reading. Please review, I'd love to read your feedback!

FYI, there will be plenty of Durin family fluff in this story because well, BOTFA (especially the EE) has ruined me and the only therapy suitable is Durin bonding. The next chapter should feature some Uncle Kili as well :P

Also, the name I have chosen for Fili's wife, Nala, is inspired by ItalianHobbit in their story "The Shadow of Suspicion." It is very well written and has an incredibly unique plot; I highly recommend you check it out!
However, the only thing my Nala and hers have in common is the name. Since Fili kind of resembles a lion (lion of Durin), I think Nala is the perfect name for his OFC pairing.

If anyone has any requests or suggestions for future chapters, please don't hesitate to let me know!