My mother has dementia and is bipolar. My husband and I are both sick and unable to care for her any longer. No other family members are willing to take her in. We have tried to get her into nursing homes but each time we try to do so, she threatens suicide. She is definitely a master manipulator. She has been this way all her life. She will then be sent to the psychiatric ward at our local hospital and she will literally have a standoff by locking herself inside the ambulance with the driver inside with her. She refuses to get off even when nurses come and try to talk to her. What can we do?