Well, perhaps they could start the day with a friendly chat over breakfast. Harry might share some of his wizarding world stories with Gabrielle, and she could be really fascinated by them.
New and upcoming writers could also write a great one. They might bring a fresh perspective to the idea. Maybe a young writer who has a vivid imagination and is a big fan of both Harry and Gabrielle as characters. They could come up with unique scenarios and interactions between the two that we haven't seen before.
Well, it could be a story where Harry and Fleur are part of a secret mission together. They had to stay the night in a hidden place for safety. When Harry wakes up with Fleur, they might start discussing their next moves in a very friendly and perhaps a bit flirty way. They could exchange stories about their experiences at Hogwarts and Beauxbatons respectively, and then realize they have more in common than they thought.
Obviously, Harry would be the main character, just in a female form. Hermione would also be a very important character. She could be the one to help Harry understand and navigate the new experiences of being a girl in the wizarding world. Ron might also be there, and his reactions to Harry's transformation could add some interesting dynamics to the story.
Well, perhaps a plot where Harry wakes up as a girl and discovers new magical abilities that are more commonly associated with female witches. She might then have to learn how to control and use these abilities while also coming to terms with her changed physical form. It could also involve a romantic sub - plot where characters who previously saw Harry as a boy now have different feelings towards her as a girl.
When the soul horcrux wakes up in Harry, it likely creates a major conflict. It might start influencing his thoughts and actions, or it could trigger a battle within Harry himself as he tries to resist its influence.
If Harry wakes up with Fleur, it could be a bit of a shock for both of them. But then, they might find that they are drawn to each other's personalities. Fleur's elegance and confidence might attract Harry, and Harry's courage and kindness could win Fleur over. Their relationship could develop as they face challenges together. For example, they might have to fight off some dark wizards who are after a powerful magical artifact. Through these experiences, their bond could strengthen into a deep and loving relationship.
She might be an old friend of Harry's from his childhood in the Muggle world that he didn't know was a witch. She had been suppressing her magic for a long time and fainted when it finally burst out uncontrollably. Harry wakes her up and helps her understand and control her new - found powers.
One possible plot could be that the girl is a fellow student at Hogwarts who has fainted during a dangerous situation, like a duel gone wrong in a secret passage. Harry, being the heroic type, uses a spell to wake her up. Then they end up having to work together to get out of the passage before it closes or some other threat arrives.
Yes, there are likely some fanfics out there with such a concept. The Harry Potter fandom is vast, and fans often come up with unique pairings and ideas. You can try searching on fanfic platforms like Fanfiction.net or Archive of Our Own. They have a large collection of Harry Potter - related fanfics.