I’m trying to find a specific HP fanfic I read a couple years ago, where Hermione is in her home with her parents. It's the middle of the night when Death Eaters attack, I beleive Hermione is in the kitchen drinking water when they break in.
They torture Hermione's mom and dad in front of her, trying to get information on the Order, the Burrow location, and Harry. Hermione doesn't break and they kill her parents in front of her. They then move to torturing her for multiple hours. When they finally stop and leave, Hermione is barely hanging on when she is saved (I believe by Dumbledore).