So my ideea is for a family orgy, the father watches a daughter and her mom put on a show with dildos and stuff and the other daughter masturbates.After a while she goes to pee and the the monster appear and threatens her to kill them.After some "persuasion" she accepts to kill daddy "favorite" daughter, her mom and the father who is not paying her enough attention.You can use gun, knives, acid and a trained dog, who was fucking her in secret! :)