Disclaimer: I don't own Harry Potter. This might be a one-shot, but if people want me to do another chapter or whatever, I'll do so happily :)
People always told you that change happens for a reason; what they were trying to say is that something you didn't want to happen happened.
That's why you never listened to them, because you had figured out what the true meaning of that phrase meant. They didn't think you had – they never thought that you were smart enough to do so. Everyone looked down on you because you were supposed to be a boy seeing as you were the eldest. Your sisters didn't care about that – they loved you, and you loved them. They were the only ones who you lived for.
Until you met him.
That was the day your life turned around.
You had read every article you could find about him. It started out as a slight obsession. You cut out photos of him and his followers. You cut out pictures of his mark. You stuck them on your wall with a permanent charm. You read and practiced the Dark Arts more than everything else because it was his speciality.
Your sisters became worried, your family became mocking. They told you that you would never get accepted, the Dark Lord wouldn't let you in his ranks because you were a woman. And women, pureblood women, are meant to stay at home, raising heirs for their arranged, respectable, pureblood husbands to keep the pureblood family line right.
You didn't want to be a woman then. You decided that you'd end up like the son your parents thought you were going to be. And then one night, you walked downstairs, to find who in your seat, but him?
Your obsession?
Your father arrived, soon after. You'd been talking to him when your father came home. You went to greet him, as you'd been taught to do out of manners, and found out he was drunk. You might've tried to convince him an excuse, but you knew he could tell when someone was lying. Your father didn't realise he was there, so he didn't think twice about casting the Cruciatus on you. He didn't even have to step in, because you were more powerful than your father, so much more – drunk or not.
And he realised you were more than a mere woman.
He knew you were so much more.
And he, you decided, was going to be your obsession forever. You were going to stand by him until they day you died. You were never going to let anyone take you away from him.
He smiled when he heard this thought from your mind.
He knew that you wouldn't go against this. He knew you'd never break that promise.
And you didn't. Never. Not once.