Mother in law coming to visit. I'm nervous and full of anxiety as she is nosy manipulative, trickery, and always looking for a chance to gain financial or residential benefits. She has no financial or residential problems. She has tricked me in past many times and I come out as bad person. She goes through my personal stuff, and I find things missing. She can't stand seeing me at a good relation with rest of the family members, she's always burning bridges behind my back and appears loving and harmless upfront. She's coming to stay for few days and I want this visit least intrusive and manipulative from her. All of our + guest room are upstairs and office downstairs. What room should I give her that is least intrusive and less nosy?