[ Rosefica leaned away for a few moments to garner herself the large bottle of bourbon, pouring herself a dram of it into her coffee cup. It was decidedly common of her, she knew, but she wanted comfort, not culture. She put her head back against his knee, thoughtfully humming. ]

That is also a valid plan. Still, he may also be in the midst of his changes and we don't know what creature he may turn into. I suppose this requires more information into him.

[ She ran her tongue over her fangs as she thought. The venom was potent; it never bothered her, but it made short work of humans. Monsters were considerably tougher, but she could make a concentrate, slather it on a blade and strike him in the night... No, too easy.

Hide arsenic in almond cookies? No, the human probably thought himself too far above "petty" tastes to eat it.

Rosefica drained her glass of bourbon in three large swallows, then poured herself more, ignoring the sharp burn in her gullet for more of the pleasant numbness it would eventually bring her. ]

I should simply ask you to kill him, in that case. I'll get a nice chair and sit in the background. We could poison your blades, after all. I am nothing if not full of venom. Both literally and figuratively, in this case.