Gabrielle Delacour was an angel. She was perfection in human form, passion and beauty given flesh. Her smiles lit up the world, and her kind words were the greatest blessing any mortal ears would ever receive. She was young, barely a girl, but her angelic perfection shone through so brightly, Fleur was convinced that it would be blinding as she grew older.
And this perfection, this beauty, this goddess among mortals, needed to be protected from the grasping tendrils of the cruel world that would seek to cast her down, to drag her into its depths and mar her perfection, snuff out her light.
Fleur had been blessed to be family to Gabrielle, but she recognised that the blessing came with a duty. A duty to protect Gabrielle from anything, anything, that would bring her discomfort.
So when she had realised that the organisers of the Triwizard Tournament, her testing ground, had taken her sister, put her in the slimy depths of the cold, dark lake amidst filthy merfolk? She’d been ready to burn Hogwarts castle, and all its inhabitants to the ground for their actions against Gabrielle, for their blasphemy.
It was only her concern for her little angel’s wellbeing that had stayed her hand. Their retribution would come later. For now, only Gabrielle, perfect, kind Gabrielle’s retrieval mattered.
But she’d failed. Fleur Delacour had failed in her duty. She had fallen to the clutches of the monsters of the lake, dark extensions of the corrupt world that sought to stop her from saving its salvation.
And her heart had stopped in her throat when she had seen Harry Potter, the little boy hero, emerge from the lake with her sister in his arms. As Gabrielle had chattered at the confused boy later, after she’d made sure her younger sister was unharmed and untouched, Fleur Delacour had stood back, deep in thought.
There was no person on this earth pure enough to be deserving of her sister’s love. But from what she’d seen of Harry Potter, he had the potential to come close.
But she’d have to wait. She’d have to watch. She needed to know everything there was to know about Harry Potter, so she could begin molding him into a proper consort for her angel, Gabrielle.
And to do that, she’d have to get close to him.
She had never expected him to fall in love with her in the process….
TLDR: Fleur is a Siscon, and things naturally spiral from there.