Full Summary:
The fates could have worked with Harry Potter, son of James Potter but when the chance came to steer Loki into Lilly's path so they might conceive a child together? That was an opportunity to tempting to let pass.

Harriet spends the first 11 years of her life with no idea of the magical world or her mother's status as a witch. She would spend many years more ignorant of the heritage running in her veins but that blood will turn her greatest enemy into her most loyal ally. It is not until Loki comes to earth to fulfill his "glorious purpose" that the truth of her heritage will become known to her. Daughter will meet father and the destinies of the Avengers, Asgard, and beyond will be drastically changed. This is the future the fates desire. They aren't beyond meddling to get what they want.

tl;dr Female!Harry is Loki's daughter and a goddess but doesn't know it. In using her blood to return Voldemort is magically forced through a change that leaves him an ally rather than an enemy. When the events of Avengers happens Harry gets involved and her heritage doesn't stay secret for long.

WARNING: Some characters in this will by non-heterosexual. There is no intended main pairing slash but it will be in there so if that will be a problem for you I advice against reading.

Also, this is being (I believe the correct phrase is crossposted) from AO3 and my first time posting anything on this sight so please be understanding that there might be some bumps along the way.

Chapter 1: Harriet Fearn Potter

The fates watched with baited breath as Lilly Potter delivered her child into the world. Had her child been sired by her husband, the soul would have been born Harry James Potter, the boy-who-lived. However, due to their meddling the child had not been sired by a wizard, but by a god. Lilly Potter Nee Evan's was giving birth to the first born child of Loki Odinson, Prince of Asgard, half born child of the king of the Jotunn, Laufey. Where one day Harry would have mastered death and challenged Hela for her title, Harriet would walk a different path. Harriet Potter, the-girl-who-lived would stand not as the Master of Death but the Master of Fates. She could be the making or the breaking of this universe depending on how her life shaped her. Thankfully for all the Fates would be watching out for their future mistress. They would do all they could to guide her to a future of balance and compassion. They would continue to do so, waiting with bated breath until the day she reached her maturity and could claim her title.

***

At five years old, Harriet Potter was struck by her uncle for the first time. Given the man's disdain for her some would be surprised such a thing hadn't happened sooner. Reaching for something handy he had grabbed a serving spoon from the table. Holding her in place by the wrist he'd delivered ten consecutive blows to her forearm as she cried out and struggled. When she was done he yelled at her that she was an ungrateful liar and deserved worse for having gotten Dudley in trouble for her lies.

As you may suspect Harriet had told no such lies and in no way deserved the punishment. Dudley had been the one to get himself in trouble. At school he had been bullying his cousin just as he did at home. Mirroring his mother's words he teased Harriet for her messy hair and untidy appearance. None of this was of course Harriet's fault. Petunia's own hair was straight and fine. She didn't know how to care for the curly textured hair that grew from the girl's head nor did she wish to learn. Harriet had never been taught how to comb and care for her curly locks in a way that would show it at it's best. Instead after her shower every night it was combed down as straight as possible in the hope it might stay that way. By the time morning came, after a night sleeping on it as it dried the strands would be left in utter disarray. As for her clothes her appearance while Petunia did relent to buying Harriet girls underwear, shoes and socks as well as some skirts most were bought from the discount bin or second hand. What she had was limited and as such they wore out quickly. What shirts she had all Dudley's castoffs and Dudley didn't take care of anything he owned. By the time they made it to Harriet they were often stained and patched or marked with little holes. Being made fun for her appearance hurt Harriet greatly as she was surrounded by a world that told her what little girls should be and she knew she was not. Dudley enjoyed seeing her tears.

Reaching out Dudley grabbed hold of a lock of Harriet's hair and gave it a sharp yank. With a harsh cry Harriet reached up trying to protect herself but had no luck against Dudley's strength. Enjoying himself Dudley gave a second harder yank that tore the hair from her head. As the strands came away threads of invisible magic left with them traveling out to wrap around Dudley's wrist before sinking away to where the fates could quickly gather them to use but used in altering the weaving of Dudley's fate.

Across the playground their teacher, Mrs Roman was distracted with matter's outside of her job and hadn't noticed Dudley and his friend herding Harriet off and out of sight. She was so lost in her worries she didn't notice one of the children's jackets had been abandoned in her path. She stepped down on it the smooth fabric of the windbreaker slid beneath her nearly sending the teacher down flat on her face. Scowling she picked up the hazardous garment. Inside on the tag in clear neat print was the name Dudley Dursley. She could have just kept the jacket and returned it to him when play time was over but she was annoyed at having nearly fallen. Striding off she went in search of the child. When she found him she wasn't at all pleased to see the large boy and his friends picking on his cousin. The Dursleys had warned her that the girl was trouble but if this is how Dudley regularly treated Harriet Mrs. Roman could see why the girl might act out. As a woman who had been bullied heavily by her own sister Mrs. Roman was not happy to see little Harriet's tears and struggles as her cousin sneered and shoved her with the other boys around encouraging him.
Stalking forward Mrs Roman demanded, "What's going on here!"

As Dudley heard her coming he quickly dropped something from his hand that she couldn't make out. When she was closer she could see that it was hair that had fallen from his hand onto the pavement. At first she was confused by it until she noticed how long and black and tangled the strands were. Fuming she unthinkingly reached out to search Harriet's hair and found a bald spot near the front. Not pleased she had given out harsh punishments to the boys and alerted their parents of their behavior.

While all the boy's parents were unhappy to learn that their children were in trouble for bullying, it was only the Dursleys who thought to blame the victim. They accused her having lied to get Dudley in trouble despite the fact that a single thought on the matter should have told them that Dudley likely had done the things he was accused of. If they wanted to protect him from further punishment they should have been discouraging him from harassing his cousin. Instead by punishing Harriet that night Dudley was only learning to continue this behavior. This lesson would cause him to continue to get into trouble for years to come leaving him with a bad reputation and very much friendless as parents didn't want their children hanging out with "that Dursley boy."

As Vernon brought down the spoon on Harriet's arm tendrils of magic traveled out from her just as they had with Dudley. These unconscious releases of magic had been happening since Voldemort had attacked her with the killing curse when for the first time in her life Harriet's magic needed to protect her as her parents could not. That night her strands of magic traveled over the spoon to Vernon's hand where they sunk down through his skin into his soul and on through on his soul's connection to the tapestry of the universe where the Fates hands eagerly awaited them. They did not care for the way Harriet was treated in her relatives care. While it was not souring her heart to others, they still wished for Vernon Dursley to pay.

The next day when Vernon came into work his boss watched him. There was a job promotion available. It should have be an easy decision who to promote. Vernon was the most senior candidate. At their company this usually meant everything. The other candidate was young blood full of ideas who didn't have loyalty to their company. There was a good chance they might loose him if he didn't receive this promotion. Being a man and a company of old values Mr Grunning had been ready to dismiss the loss but the night before he'd found himself unable to sleep as he spent hours second guessing his decision. Vernon was a loyal employee but did that mean he would be what would serve the company best?

It was a few days later that Vernon learned he had been looked over for the promotion. He was furious. It was only a small part of the bad luck that landed on the Dursleys as the years past. While none of these events could logically be blamed on Harriet the Dursleys came to lay the fault at her feet. In a way they were right. It was because Harriet was with them that many of these things happened but the blame truly belonged with them. Had they treated her well they could have enjoyed a far better fate. Like Mrs. Roman.

The day after the hair pulling incident Mrs. Roman had noticed that with the way Harriet's hair was laying displayed her new bald spot rather than hiding it. The state of Harriet's hair always bothered her but she'd dismissed it. Curly hair was temperamental and children were usually interested in things other than keeping up appearances. However seeing the bald spot Mrs Roman decided to see about helping Harriet with her hair. With the girls permission she gently disentangled and combed out her curls while the other children played.

For the first time Harriet could remember someone was taking the time to teach her how to care for herself. Brushing her teeth, learning to wipe, and wash had all been things she'd learned by overhearing Petunia's lessons to Dudley or from kid's programs. It was also the first time Harriet could remember someone besides Mrs Figg touching her with kindness. The cat lady who sometimes watched her would occasionally pat her on the head but that was nothing compared to the continued gentle touch and instruction of Mrs. Roman.

While the teacher worked on Harriet's head strands of magic continued to leave Harriet to tangle around her fingers and sink into her skin. Dozens of these strands were given that day which The Fates dutifully collected.

That night it was be revealed to Mrs Roman that her husband had been cheating on her for years. She cried and yelled but by the end of the night she'd found it in herself to tell him that she could forgive him, with time. She was willing to work on their marriage. It was as she was talking about counseling that Mr Roman realized while his wife was willing to continue their marriage he was not. The next morning he brought down a set of packed luggage to the breakfast table. With a glass of orange juice in her hand Mrs Roman was informed her husband was leaving her. When he left that morning the path to a happier life opened ahead of her. That summer she met the man that would become her second husband. He was a man who spent his life loving her completely. He never strayed. He was her partner in every way. Had she still been married the two would have never met, but they did. They met, they married, and ten months later they became parents. Her miracle baby. The one thing she always wanted. Something the doctors had told her she would likely never have. The fates used the last of the threads Harriet had gifted her teacher to see that both mother and daughter made it safety through delivery.

Unfortunately the fates work became much harder once Harriet turned eleven and was told she was a witch. Magic was largely a matter of belief. It is why confidence was so important to spell casting and why so many of the greats grow to be arrogant. Once Harriet believed a wand was essential to magic her instinctual use of her gifts ceased. Without the strands she bestowed onto others The Fates had a much harder time altering the weave of the universe. Fortunately there were still the Seers and "prophecies" that could deliver The Fates will onto the world.

Contrary to what the mortals of Midgard believed prophecies delivered with their voices through Seer's mouths were not a prediction of the future, but a kind of curse. All prophecy was in a way self-fulfilling. If no one believed in a prophecy then it would never come to pass. But if it was known, and believed if only slightly a persons believe would help to change their life's course to see the curse fulfilled. The more firm the belief, the greater the change and if that person had magic? Magic, after all was influenced by belief. If the person believed then their magic would fuel the curse keeping it strong and encouraging other's to believe the words. This is why The Fates were so choosy about when prophecies would be delivered. This is why they had waited until Sybill Trelawney was in front of Albus Dumbledore to deliver Harriet's prophecy. It is also why they used all the influence they had to try to put a follower of Voldemort's within ear shot when the words were said.

Free will existed. People were free to choose. The Fates could place every conceivable encouragement to turn left and still a person might choose right. Prophecy didn't guarantee a future. People could choose not to believe. People could fight the will of The Gates. But a betting man knew the odds were against a fighter. The Fates they had gotten very good at getting their way. So while things became harder on them after Harriet started believing she was a witch and a witch could only do magic with a wand The Fates were still able to guide her path. They worked and maneuvered like never before to ensure the daughter would be in a position of power come the day her heritage was revealed.