My 75-year-old mother is able to live on her own, but she's become hateful and paranoid. She thinks people are stealing from her--even when there is proof that it did not happen. She accused me of stealing picture frames from her house even thought I had bought them from Target and had the receipt! She thinks others also steal from her--threatens to kill them or burn down thier house. Insists police invesigate and gets upset when nothing is done. No one has taken anyhting from her. What action can be taken to ensure her safety and those around her?