The Reincarnated Blood Princess Will Not Be Reduced to a Farming Strategy

[Western fantasy style light novel, mildly Machiavellian to a certain extent] On the way, I encountered a teleporter dump truck from another world. I tried my best to defeat it, but it was not possible to defeat it. She traveled through time and became a substitute carefully crafted by the Blood Princess, and then ruled her life in her stead. The time traveler looks at a different world that has experienced a world war. On the devastated ruins, all races are still soaked in trauma and pain... "Do your best." The time traveler sighed. "Okay!" A certain heartless vampire princess cheered.