Averys.
I always thought it would be kind of therapeutic to see Angelina Johnson's head get hit with a bludger, kind of symbolic to how insufferable she was as a Chaser while at school. The bludger would obviously have sharp, metal spikes, which would pierce through her skull in an instant. She'd have no thought, but it won't kill her instantly. She'd fall to her knees and onto the floor slowly, as if in slow motion, and succumb to her wounds, over an hour.