She feels the bond between them snap like a cord being cut between their hearts. An overwhelming feeling of despair and tragedy overcomes her and she scrambles to get away from the others. Tears spring from her eyes like an endless source of pain. She gasps for breath as the loss consumes her. She turns around and they know. Hermione sobs and Ron shuts his eyes tightly. She feels a scream climbing forcefully up her lungs and she grabs the sides of her head, desperate for release. She looks around for Harry, her shield, until she remembers he's the reason she's falling apart and all hope is lost to her.
She throws a protective shield around her body in a circle so that no one can enter or be harmed. She gasps for breath as if she's drowning and in many ways, she is. She lets the pain consume her without her usual control and lets her scream tear through her vocal cords and bounce off the protective shield. Green flames flow out of her chest and surround the stone floor within the shield, yet she feels no heat or pain apart from her own crushing despair.
George, Ron and Hermione sit against the wall, desperate to help her, but as she loses control, they can still hear her scream through her own field. The entire castle shakes as she remembers Harry, Fred, her mom, and Sirius. She lets the pain flow out of her in tidal waves. The wind outside the castle blows through the trees in the forest, alerting Voldemort and his men that Harry Potter is, in fact, dead. He grins widely and basks in the torturous screams Sam lets free, feeling her immense power.
Back at the castle, Sam relieves every tragedy and something inside of her snaps. Her screams die down and the flames evaporate into the air. She lowers the protection and stands slowly. Over the horizon, the sun begins to rise, bringing light to her burning green eyes. George stands and approaches her.
Her eyes glide into the Hall where Fred's body lay, "Who killed him?"
George shakes his head, but she persists, "Who?"
He looks at the body of his brother and another tear slips out, "Bellatrix."
Any ounce of forgiveness and compassion Sam may have had, dissipate. She nods and her eyes burn brighter, the whites of her eyes slowly turning black. George backs away and Ron pulls Hermione closer to him.
"They're all going to die for what they've done," Sam assures.
As the dawn finally breaks, Voldemort and his army, fewer than before, cross the bridge once again. Hagrid marches with them carrying someone. Sam is the first to stand on top of the steps in the courtyard, she watches as they enter the courtyard. Voldemort stands ahead of them all, staring at Sam with intensity.
"Harry Potter is dead!" He shouts and his Death Eaters clap and cheer and laugh.
Sam begins to take steps down to meet them in the courtyard, her hands surrounded by green flames. The remaining students and staff and members of the Order follow behind, but stay behind her. Voldemort smiles victoriously at her.
"Ah, the Impossible Girl, such power you have."
She says nothing, but keeps her head high as her eyes glow brighter than ever before.
"Join me, my dear. You would be a valuable asset," he offers.
Something stills in her chest, the cord that snapped begins to connect once more and her heart rate picks up. The black that clouded her eyes returning to white.
She steps forward slightly, "You killed the love of my life... you will die for that." His evil grin falls and she finishes, "But not by my hand."
At her words, Harry rolls out of Hagrid's arms and runs to the side. Voldemort shouts out in rage and begins to fire spells at him, but each curse bounces off his back. His snake like eyes violently turn to face her.
"You!"
She matches his vindictive grin from earlier, "Me."
He casts a spell at her, but it bounces off her like it did with Harry. The Death Eaters begin firing spells at the students behind her, but they also bounce off the shield she's cast. She brings her hands to her chest and a green ball of fire emerges. She looks up at his army and smiles sadistically before pushing her power out like a shield driving straight for them. Voldemort casts his own protective charm, blocking her magic, but she doesn't relent. The fire in her eyes burns like the sun as she lets go of her own reigns and pushes every drop of power out of her. She feels her own power flow through her veins like a drug and it strengthens her further.
His eyes widen in a moment of fear as her magic breaks his enchantments, "Kill them!"
He runs after Harry while his army attacks the students. Many duel one on one, but anyone who attempts to even approach Sam is flung backwards and off the bridge. She stands still and finds Bellatrix in the crowd. Without a word her power wraps around the woman and drags her to Sam's feet.
"You killed my mother. You killed my father. And you killed my brother."
She laughs maniacally and nods towards George, "Don't worry, I'll reunite them for you. Won't be hard since the other one was easy. He died screaming."
Something inside Sam snaps as her eyes shine bright green in pure rage. Bellatrix's words die in her throat and Sam places her hand on the side of her face. The skin her hands touch begins to rot and decay at a rapid rate. Bellatrix cries out in agony and screams as she thrashes around. Bellatrix screams loudly and the scene turns heads from both sides.
Sam smiles maliciously, "Who's screaming now?"
She rots Bellatrix from the inside out until her body falls to the stone floor and turns to ash. Her gaze turns to the Death Eaters that surround her. They rush towards her in a rage and she laughs maliciously before pulling her magic to the center of her chest and pushing it out. Green flames hit the chest of every Death Eater surrounding her. They're dead before they can hit the floor. Her eyes burn as she looks for her next kill, but George panics and turns her around, her eyes green and terrifying, he pulls her into his chest, "He wouldn't have wanted this."
The fights going on around the fade away as Sam hears his words. His arms wrapped tightly around her frame, holding her in place and willing her to come back to them. Fred's face flashes in her mind and then the memories come forward, hitting her like a truck. The day before her first year at Hogwarts, when Fred, George and Ron stayed up all night with her, calming her nerves. The way Fred would always make her laugh. How he and George never failed to pull her out of the dark when all else failed. How they invented portable fireworks so she would never feel alone. His smile when they would chase each other around the Burrow, the way they always made her feel safe.
Every memory she had with them flipped through her mind. She pulls away from George and stares into his eyes, her own returning to their usual hazel. She gently places her hand on his cheek and uses her thumb to wipe away a stray tear. He leans down and kisses her forehead. Her heart shatters. She looks around and sees that it's only Voldemort and Harry left. Her eyes land on him and hope resurfaces. His head turns to the side and he meets her eyes. Tears fall down as she watches him in his final fight with the man who took almost everything from them all.
Looking into her eyes, he knows all that she feels and everything she wants to say. His own strength flows through him and he faces Voldemort once again, pushing everything out at once to defeat his greatest enemy. Green and Red magic clashes in the air as they battle to the death. The Elder Wand begins to crack until it flies out of his hands and lands in Harry's. Voldemort lurches forward in pain and his body begins to flake and turn to ash as his remains are scattered into the air. Sam runs across the stone floor and directly into Harry's arms. They are both alive. He holds her tightly and kisses the side of her head.
Realization dawns on her and she opens her eyes. She pulls away from Harry and stares into his eyes, making up her mind she kisses him with everything she has. When she pulls away, she turns to George.
"You always kept me safe, but I didn't keep him safe."
George shakes his head, "There was nothing you could-"
She smiles, "I'm going to save you both now, it's time to pay you back."
A tear slips from her eyes as she faces the castle doors. She nods to herself and Harry looks at George in confusion, before they both follow her inside. Ron and Hermione watch them follow her inside and tail closely behind them. Sam enters the Great Hall and walks past everyone who was killed in this battle, until she stops at Fred's body. She kneels down beside him and takes a deep breath.
"What are you doing?" Hermione asks.
Sam closes her eyes and relives every memory she's ever had with Fred. Every smile, every laugh, every time he's saved her, every hug, every adventure. She remembers every detail of him and she doesn't feel rage or pain. She lets love consume her heart and mind. She pulls her hands to the center of her chest and feels a fire surge through her, like every drop of magic inside her is changing. Harry kneels beside her and watches as her hands mold a ball of her magic from her chest, but rather than it being green, it's bright white. She holds her hands out over Fred's body and maintains her focus.
Drawing the attention of everyone nearby, the Weasley's, McGonagall, Hermione and Harry gather around her, watching her every move. As she lowers her hands to Fred's chest, her heart rate slows, and her breathing becomes uneven. The white ball of light follows her hands and settles deep within Fred's chest, lighting him up from within. Like the sound waves from one of her screams, white light begins to pulse from her hands in the rhythm of her own heart. She begins breathing deeply as a tear falls and the pain becomes unbearable. Their eyes move from her to Fred in disbelief, but as her magic continues to pulse, Fred gasps. Sam collapses backwards, willing her eyes to stay open to see Fred one last time.
He shoots up from the floor and looks around startled until his eyes fall on Sam. Harry rushes to her side and holds her in his arms.
"No, please, love, please. I didn't leave you. Don't you leave me, not now. We won, baby please."
Fred and George hold each other for a moment before the run to her side.
"Little S, hey, sweet girl," Fred encourages, "I'm here, don't go. Don't go, darling."
Her eyes begin to droop and she gives him a warm smile before her eyes fall closed.