My 81 year old mother has turned for the worse mentally in the past 2 weeks. This has happened very quickly. She doesn't want anything to do with me and my brother (her main caregiver with whom she lives) and wants to give away all her things so that no one else can have them when she is gone. She is remembering horrible things that we did to her that never happened. She is also having lengthy conversations with pictures or with her eyes closed. She knows she is not supposed to cook, but recently has left frozen pizza burning in the oven filling the house with smoke or leaving soup to boil to nothing on the stove. She has an appointment with a geriatric psychiatrist and social worker and doctor in a week, but I'm worried now. She lives with my brother who does the best he can; makes her breakfast and dinner and tries to come home to make her lunch. My dad is going to move in with me tomorrow because she is so mean to him and his presence makes her worse. What options are there if she becomes dangerous by threatening my brother or by accidentally starting a fire? She has always been a very tough cookie, but now she is getting dangerous.