My 86 yo Mother has stage 5 Alzheimer's disease. I have found that for the most part the validation practice works best as I can only imagine how difficult it is for her to have me correct her constantly when she knows that she is right. The biggest problem we have run into of late is that she believes that my younger sister is a 7 year old child and is lost and she can't find her. She constantly is looking for her and gets very agitated because she can't find her and no one believes her. She has started wandering off while looking for her and leaving the facility. She has a wander guard on and the door alarms but she just goes right on through and says that the staff will find her since the door alarmed. I can only imagine how terrifying it must be to think that her child is lost. I've tried reorienting her thinking it will help if she is reminded that my sister is a grown woman and has her own grandchildren. She keeps disagreeing with me that this just can't be possible. We thought if my sister would talk to her it might settle her down but that isn't happening. Sister has NOTHING to do with her. Should I just go along (validation) and not disagree with her? Or continue to remind her that her baby is now a grown woman? Distraction only works for a moment and then she is back at it.