Authors Note:
I wrote this as a challenge of sorts from a friend, and I needed it to be short and sweet, because I couldn't really do this to poor Neville for very long.
It's put of canon, and is as though Harry died for real, and Voldemort is ruling the world. Personally, I could actually see this happening if the Battle of Hogwarts had of ended with Harry's death, Voldemort would not let such a strong Pureblood off so easily, even if Neville rejects his offer in The Deathly Hallows.
Looking into the bruised and battered face of her captor, Bellatrix Lestrange remembered the night of torture which landed her into Azkaban Prison. The son of the now St Mungo's residents was chained in the middle of the dungeon at Malfoy Manor, for her to use and abuse at her will. The Dark Lord specifically requested she punished the Pureblood who was unwilling to act as the Dark Lord willed, even with the fall of Hogwarts, Dumbledore's Army and the Order of the Phoenix.
Bellatrix circled her prey, staring intently at the boy as she rounded him. The boy resembled the fat woman she tortured to insanity that night for information on the Order. Remembering her screams of agony, Bellatrix shivered with anticipation at the thought of hearing them again, this time from the boy slumped before her.
Stalking her prey, Bellatrix crept closer to the boy. He, along with the others, were brought to the Manor unconscious. He and the rest of the fools continued to fight, even after the Great Harry Potter's death. The Dark Lord, however, was determined not to spill Pure blood, and instead sent for all those who he deemed worth of redemption to be sent to Malfoy Manor, where their spirits would be broken and they would be able to join the Dark Lord.
She had begged her Lord to preside over this particular Pureblood, and persuade him to join her Lord in the new world. At first, he refused to trust that she would not do to the boy as she did to his parents, but with her word, he allowed her to convert the boy who's valour would surely be an asset to his new regimen.
As she closed in on the boy, she spoke in barely more than a whisper
"Get up, little boy"
She knew that he was unconscious, but she pulled out her blade and ran it along the side of his cheek slowly, as if she thought it a lovely way to be brought back to the conscious world.
The boy stirred underneath the hand which gripped his clothes. She ran the knife over the same wound she already inflicted, cutting his skin twice. The boys' eyes opened, and bore nothing but strength and determination within them. Without a word, or whimper at his injured cheek, he stared at Bellatrix with a glare filled with such hatred and defiance the Dark Lord himself would be envious.
Bellatrix rose her eyebrows at the look he gave, and turned her back on the boy. She stalked away, calling over her shoulder
"Your parents had that look to. They thought they could overcome me, they thought they could RESIST too".
Turning around suddenly, she held her wand as though it were a whip above her head. She brought the wand down in a striking motion, cutting the boy from his shoulder downwards. The boy gave nothing more than a grunt at the onslaught.
Displeased with this result, Bellatrix performed the same non-verbal dark magic, this time cutting across his face, slowly and more painfully, as if claws were being dragged rather than magic. Again the boy barely reacted to her magic.
"Brave like your parents boy?" Bellatrix said, menacingly.
"Let us see what you make of the curse that drove them insane".
Bellatrix swung her wand again and whispered the word
"Crucio"