Andromeda had gotten separated from the others in the heat of the battle. Her fear had fleeting with the arrival of her adrenaline rush as she fought against those that would harm her, and she felt somewhat invincible.
Moving through the battlefield, Andromeda caught sight of a familiar flash of blonde hair. Her body seemed to freeze momentarily as her brain caught up, recognition flashing in her eyes. But her stomach dropped further when she saw who his wand was pointed at, and the spell that flashed from its end.
She started to race over, even though she knew she could outrun the killing curse. It struck Tiberius in the chest even as she tried to stop Lucius from casting it. A stunner exploded from the end of her wand without a word, racing towards its target.