Most women are evil and enjoy anything involving agonising death. This interest is to our advantage as it is vicarious. The telly box people screen such dramas in order to protect the male population by allowing wimmin to enjoy murderous fantasies and therefore sublimate such evil fantasies. Make her a tofu sausage roll to bite on while she views and her cup will runneth over.
In other more coded news:
Keep a close eye. If she goes for the knife drawer, run. Let your family know. Later, you can re-enter the house. Have a weapon about your person. Even a screwdriver will do. Ready yourself for a counterattack.