Sing To Me Your Insanity (смешанная)

Hermione Granger had many secrets. Some were smaller than others.But the biggest one was something only her parents knew about.
She wasn’t just a muggleborn witch, but a siren as well.
She wasn't ashamed of what she was, but being a muggleborn AND a magical creature wasn't something she wanted getting around an already prejudice school. For years she kept the secret to herself; singing down by the lake at night to ensure no one heard. She had been so careful too, but she knew that one day someone was bound to find out about her. Luckily for her, the one who hears her on that fateful night just so happens to be her mate.
Unfortunately for her, that mate also happens to be the completely insane and surprisingly not dead, Bellatrix Lestrange.
If only she knew what her abilities would someday bring, Hermione would've sworn back then to never sing again.
Bellatrix knows what power she holds over Hermione and she plans to use it in any way necessary to make the girl hers in every way possible. Because filthy blood or not, she belonged to her now and no castle walls, filthy blood traitors, or magic barrier would keep the girl from her. And she would very much like to see them try...