Hunger strikes him early that morning. The last few times he's been on a hunt, the benefit of the kill didn't reach him but instead earned him money for his part in capturing the person for sale. Sale for what, he didn't know and he didn't ask. Organs, meat, and the sex trade is what he dealt in although the meat trade seems to be much more forgiving. So long as the person doesn't seem to have any open sores or anything of that sort, they're fair game and he doesn't need to be that careful, just so long as he doesn't envenomate them which, really, is sometimes very difficult.
It's selfish of him not to sell off the victims he kills, but he does get good use of them. Like a cat keeping a bird alive for a time just for the amusement, his victim isn't quite dead yet, just laying on the ground nearby him, gurgling and trying to cling onto some form of life. He could kill them off and show them some mercy, but he tends to like when he can feel the struggling when he's feeding off them, and hearing them speak is also something he seems to enjoy. It's all new to him. Prior to his reawakening, he would simply feed or turn, and run away. Now, he tends to savor his kills.
It was raining, and this area is a good spot to find lone humans who may or may not be well armed. Luckily for him, this one wasn't apart from a knife, which she hadn't had a chance to use in her defense. He blends in well with this group of people, seeming like a displaced human himself most of the time. So he came at her with some degree of desperation just to get out of the rain, under the impression that being out in it put him at greater danger. In her kindness and naivety, she had shared her space with him. They had a short conversation, and when she moved to attempt to make a fire for them to share, he attacked. Nothing too gruesome, but he covered her mouth and held her down in such a way to protect himself from a defensive attack, and bit harshly into a few spots on her neck, making her bleed out quicker. The scent of it was incredibly comforting, too. So, he's been savoring it.
She's at the end of her life now, most of her blood having been drained out and him feeling more satiated than he's felt in some time, he's not really moved from his spot. It's a shelter of sorts, under what must have used to be a shop, back in the day. He's visible, but there isn't really anyone else around the area and given he can camoflauge himself he isn't too concerned about it. It's dark, rainy, and the scent of blood is really only strong to him still with his heightened senses.
It would make sense to move the body. Maybe get away from her, but there's still some juice left in her yet and he's simply waiting for his stomach to settle, so to speak. She tries to say something, to call out with what little strength she has left and he sighs, getting himself up. He picks her up too, easily holding up her mostly dead weight and lapping up whatever blood still remains on her neck, shushing her and going in for another bite. Really though, should a passerby see them it likely would look like a couple, not able to wait until they had some privacy.