When it struck,he launched himself forward, cursing and snatched it away, crushing it, but too late. He cursed louder as he searched her body and finally he saw the bite marks. H bit his lip, then nodded. No choice, then.
He reached for her, swiftly. Sarah would kill him, but that would be later. He lowered his head to her neck and carefully, slowly, found the snake bite holes with his teeth. And he bit her. gently, controlling himself beyond anything he had ever done, he bit her, even as he cast his mind into her body, searching for the venom as h sucked softly on her neck. Her blood was intoxicating, feeling and tasting almost more liquidy than normal, not like Sarah's but different, but still full of power.
The hunger hit him like a roaring train and he battled it as he sucked slowly, tasting the venom as he encountered it in her blood, his mind finding it and somehow pulling it out as he drank.
He did not know if it was because he actually did anything, or just because it had just entered her veins but he sensed he had it all and he finished, tongue licking across the holes and stopping the blood as he lifted her, still waging war against hunger and ancient instinct.
A moment later, they were gone, shifted by his mind to the escape point and aid.