A/N: This scene takes place at the battle at Hogwarts, just before Harry gives himself up to Voldemort.
No amount of power could've held Bellatrix back as she rushed at Nymphadora. Her filthy niece. The one who married the werewolf.
Nymphadora saw Bellatrix coming at her, and shot a stunning spell. Bellatrix deflected it.
"No!" Bellatrix yelled at Rodolphus who came to her aid. "I'll kill her myself!" With that she shot a killing curse at her niece, and it missed her by inches.
Bellatrix continued to cast curses at Nymphadora who dodged or deflected all of them. Bellatrix cursed under her breath. Her niece had been trained well. But not well enough. By the time she'd blocked even one of Bellatrix's attacks, another was coming at her, giving her no time to cast a spell of her own.
"Tonks!" Someone yelled as a killing curse nearly hit Nymphadora. Remus Lupin ran forward in front of his wife, blocking the next spell for her.
"Perfect!" Bellatrix laughed. "I can kill both of you now and save myself sometime."
Remus and Nymphadora both shot curses at Bellatrix who dodged them easily. A killing curse was shot at Remus from behind Bellatrix. Rodolphus was once again at her side protecting her.
"Their mine." Bellatrix hissed. She cast a simple spell at Rodolphus who few backwards into the wall. She turned her niece in the stomach with the killing curse. Nymphadora fell on her knees, then face down onto the ground.
"NO!" Remus yelled at Bellatrix as he knelt next to her. Bellatrix laughed loudly. Killing her was as satisfying as killing Sirius.
"You bitch!" Remus yelled at Bellatrix as he rose to his feet. Bellatrix turned and ran, Remus close behind her. She ran past Yaxley who was dueling Kingsley Shackelbolt. A young boy, probably a third year ran up to curse Yaxley.
"Avada Kedavra!" Bellatrix quickly murdered the boy if nothing else just to anger the werewolf more.
Bellatrix ran to a deserted part of the castle, Remus Lupin following her the whole way. She ran behind a large post as Remus closed the gap between them.
"Where are you?" He yelled. "Come out you coward!" Bellatrix laughed.
"Poor puppy." She said. "So sad cause his loved ones are gone." Her voice echoed in the empty corridor, confusing Remus who spun in a circle.
"Come out and fight!" Remus yelled. She stepped out from behind the post, her wand at her side.
"Stupify!" He cried. She spun and dodged the spell. Another spell shot as her and she spun again, behind the next pole. The pole burst into flames and she danced to the middle of the corridor, facing Remus.
She laughed. She was having fun. She was taunting him. She'd play before killing him. She danced around his spells easily, laughing every time he missed.
"Avada Kedavra!" Bellatrix blocked the spell with her wand.
"So, little puppy wants to play tough." Her baby voice annoyed him. "I can play tough too! Avada Kedavra!" Remus Lupin fell to the ground the same way Nymphadora had. Bellatrix laughed at him and skipped off to rejoin the battle. Now she could have some fun.