Girl's Drawings Come to Life and Kill

When I was little (early 90's) I watched a movie at a friends house, and I can't find the title.

Setting: Several people are locked in a house together and being filmed for a reality TV show or something, but the one girl has these drawings she's sketching all the time. Well soon into the time at the house they find that something is killing anyone that is left alone or goes into a room by themselves. One lady is killed (from my childhood memory of it) by a dishwasher.

At the end of the movie I remember it being the sketch artist girl's nightmare demon doing it, or something. Like he's making her drawings come true or something.

She ends up cutting herself and in an institution at the end. I think the name was The Calobus or something like that.

Can anyone help?