She has been seeing things out her window at night for years. There have been train sets, kids, people, etc. She has heard whispering and said someone shines lights through the blinds and the electric socket. Yesterday she used duct tape and taped up the window. I live with her and have checked many times and assured her there was nothing there but she doesn't believe me. Is this part of Alzheimer's? Her father had schizophrenia. I tried telling her they caught the people and they are gone but it didn't work.