My Possession Became a Ghost Story

I got reincarnated into a romance fantasy novel. The problem is, I woke up inside a coffin—on the day of the original body owner’s funeral. And since I’ve read way too many novels, I can’t even figure out which story this is. With a cold family and terrified maids, it looks like I’ve possessed the villainess. Fine. I’ll use all my romance-fantasy experience to escape this villainess route first! While trying to survive, I find a strange symbol. “What is this?” [How to Summon □□] A summoning circle that can call spirits or dragons? Perfect. A villainess needs at least one way to protect herself. “Meow.” …Except, why was I chosen not by a spirit or a dragon, but by a leopard-patterned, cheese-colored kitty with three eyes? Well, whatever—he’s cute, so I don’t mind! --- They say a monster lives in the Count Rohanson’s estate. A monster wearing the skin of the late Lady Evangelin. A heroine who believes the world is a romance fantasy— and the people around her who end up living through a horror story because of her.