He doesn't reach her in time. Milliseconds too late. Her eyes are already the glassy eyes of someone who no longer can see. Her body, she looks so much younger. He can't pretend that she's sleeping. He kills everyone who had anything to do with it.
There are dozens of vampires in the building.
He is careful to clean the blood from his hands, he has to take her home. He doesn't want worthless blood on someone so valuable. He carefully carries her. He knows, he knows she had blood that morning. He just hopes it's enough.
One bullet. Enough to extinguish light from her eyes. The blood had blossomed like a flower in the spring, too quickly for human eyes to see. The blood has soaked through, his shirt is wet with it. He hasn't prayed in centuries, but he prays to any and all gods that still listen to his prayers for her to turn.
His mood is worsened when he realizes she might have wanted a human death.
Drinking vampire blood, surely she had thought of the possible consequences.
He doesn't breathe until she does.