Based on your query, it seems you are referring to the mod for The Sims 4 (often associated with modders like Zero or similar creators). This mod enhances the vampire gameplay experience in The Sims 4 by making vampire behavior more dangerous and lethal to human Sims.
Here are key aspects of the mod, as discussed by the community: VAMPIRES - Can Kill
Some versions of these mods allow for the enabling/disabling of "extreme violence," allowing you to tailor how often Sims kill each other. Based on your query, it seems you are
Vampires can act more aggressively and autonomously, including drinking from pregnant Sims or turning Sims without restriction. Based on your query