A/N: Something short I wrote for my HP page, looking for feedback to decide if I should draw it out or not. I am quite content with it as it stands. Leave me reviews maybe? :)
As Severus lay in his own blood in the Shrieking Shack, the lights slowly dimming in his eyes, he used his last bit of energy to conjure his Patronus. Focusing on how lightweight he felt now that Potter had the key to defeating Voldemort, he drew his happiest memory of Lily from his subconscious- the day he first laid eyes on her radiance. His doe sprang from the silver dust, tears of understanding glistening in her majestic eyes. She knelt beside her master, gently nudging his cold face as he whispered his final wish into the silence.
"Protect... The boy... Harry... Keep... Him safe..."
Her bright form vanished, leaving him in complete darkness as a strong sense of contentment washed over him. He closed his eyes, unable to fight his death any longer, his soul ready to greet death as his old friend once more.
Harry knew her feminine form in the distance, the doe that guided him in the Forest of Dean was now guiding him through the Forbidden Forest and to his death. Knowing that it belonged to Snape only served to steel his resolve. As he turned and motioned to the elegant figure to come closer, he extended his arm low to the ground. She bowed her head as she approached him, her eyes full of sorrow, and touched her nose gingerly to Harry's outstretched palm. At that moment she accepted Harry as her new companion to fulfill her old master's will.
As loyal as Severus himself, she stayed with Harry until the very end.