Disclaimer: I don't own anything - Tolkien gets all the credit.
Prologue
She was born under a crescent moon during year 1145 in the Second Age of this world. In her ran the blood of the Istari – the result of a forbidden love between a mortal and a wizard. Given the grace of the Valar and many gifts of magic, she travelled through the age, befriending man, elf and dwarf. Chief amongst her gifts was control of elemental magic. Where she lacked the healing talents and foresight of her father, her powers could result in flames hotter than dragonfire, ice that could freeze the living, wind that could topple the buildings of man, and the ability to shift large portions of earth.
Not many still living knew of Hilde's early years. Hilde was first raised by her mother in the Dwarven realm of Khazad-dum. Back in those days, the Dwarven people were allies to the elves of Eregion and fought great battles alongside them against goblins, orcs, and all manner of evil creatures. Hilde's father, the great wizard Gandalf, had come to Khazad-dum in his many travels and fallen in love with a Dwarven woman. He did not remain with her, for his journeys were far more important to the future of Middle Earth, so for many years he did not known that their union had resulted in a child. Gandalf, a wise Maiar in existence since before the dawn of the First Age, did not even think was possible for him to create life in this way.
When he returned to Khazad-dum, Hilde's mother had long since passed – but the ageless daughter he'd left behind still held her youth. Thinner and taller than a normal dwarf, Hilde looked as though she didn't quite belong. She wore her hair in the tradition of her mother's people, with braids decorating her head in recognition of her station, and her bearing was clearly that of a stubborn and independent dwarf. It was her eyes, however, that gave her away. In them, Gandalf could see the stars and silver glass. In them, Gandalf could see himself.
In fear of what might happen to this unique and completely unknown creature if other forces should learn the truth of her heritage, Gandalf took her away from Khazad-dum. He taught her the many languages of the world, of how to harness the magic that ran through her veins – anything he could do to protect her, he did. He never told the other wizards about her and he told her to never allow another creature to know who her father was.
Between the peoples of Middle Earth she travelled, until the day came that she stood at the steps of Erebor, the Lonely Mountain. In the almost 2,000 years that she had walked the paths of the world, Hilde had never seen such an amazing creation. The fortress city of emerald green held many wonders that she hoped to experience first hand, if the Dwarven king would allow it. King Thror only knew of the Lady Hilde from legend – she was ageless, wise, and had fought alongside Dwarves in the ancient days. To offer her admittance to his city was considered a great honor, though the aging King was suspicious of her presence. Ever did he seek to protect his riches from the rest of Middle Earth.
It was Thror's son, Thrain, who came to her aide and allowed her into their realm. He had long hoped to meet the warrior maiden and he gifted her with a great symbol of power – a staff of mithril, forged in the fires of Erebor by his own hand. He hoped that she would wield his gift in the centuries to come as token of her allegiance to the line of Durin, to his people. It would serve as a message to the other Dwarven kingdoms that Erebor held the favor of the longest lived Dwarf in all of Middle Earth.
During her time with the people of Erebor, Hilde was amazed by the majesty of the fortress. The mines of gold that traveled deep into the rock made her feel more connected to her earthen magic. The golden glow of the walls, the gemstones that surrounded her, reminded her greatly of her youth, in the days before her mother succumbed to mortality in the now dead halls of Khazad-dum. Fearful to remain in one place for too long, Hilde only remained in Erebor until the celebration of the birth of Thrain's son, Thorin. The young prince was the pride of his people and Hilde offered the babe a gift as a symbol of her fondness for his sire. It was a ring, forged out of the rock and mithril of Erebor using only Hilde's earthen magic. The ring held a silver glow and Hilde told Thrain that she would return again one day, to meet the man that Thorin would become.
A/N: Well, there it is! I felt like I couldn't get all of this information in the body of the actual story so I opted for a short prologue to start it off. I hope you all liked it! I'll try to get the first chapter, taking place at the beginning of 'The Hobbit,' within the next day or two.
…and in case anyone is interested, the reason behind my OC's name, Hilde, is really just because I felt the meaning of the name was perfect – Hilde is a German name that stands for "ready for battle; battle woman; battle stronghold"
Please Review to let me know you thoughts! Thank you! :)