I have recently reached a point of no going back hatred towards my narcissistic MIL after many years of being intimidated by her and letting her get away with being nasty. We are dreading the visit but DH is not able to cope mentally with telling her not to come (still afraid of her), so she has to come. But to humour myself and make it more bearable, I want to make her stay as awful as possible. Please help me think of ways to make it as dreadful for her as possible.