Sing to Scars (гет)

This work is inspired by lone_amaryllis Check them out, I love every Harry Potter fic they have ever written. If you like Snape/Harrie pairings, this author is for you :)
Premise: Harrie Potter, the Girl Who Lived, is not the same after the graveyard. Her best friend Ron was murdered in front of her. And Voldemort did unspeakable things to her, which she refuses to tell anyone about. But it broke something in her, and now she's going through the motions, trying to bring him down, doing what she's told, letting herself be used by the Order but ultimately wanting to die in the war, for her pain to be over. And she's healed and empowered by none other than Severus Snape.
ALL THE TRIGGER WARNINGS.
I fully realize this is a problematic pairing for SO MANY REASONS.
Also yes this a story about trauma. I'm sorry. I only know how to write about one thing.
Chapter 1: Do your worst, dungeon bat. Chapter Text Harrie shouldn’t have cast the Fiendfyre, but she had to save Dudley. She wouldn’t have bothered if the dementors were only coming after her. She couldn’t cast a Patronus Charm. Not since the graveyard she realized…
If it had just been her, she’d have let the dementors destroy her. She had felt their shivering cold — and this time when they came near her, it wasn’t her mother’s screams she heard. It was Voldemort’s voice in her ear. She could feel his lips on her skin, his breath on her throat, his fingers tracing her scar. She felt an explosion of pain in her head, and she felt all the pain and agony of that night in her body as if it was happening again.
She wanted them to take her. To drain her. To leave her empty. A shell, unable to think anymore. But she saw one attacking Dudley. And then she’d tried to cast the Patronus Charm. And failed. She couldn’t conjure a Patronus any longer. She realized then that Voldemort had broken something in her — had broken her, and she’d cast Fiendfyre. It was the only known thing tha