Some problems that my mother solved.

Unfortunately, your mother's auditory hallucinations, delusions of murder and other symptoms are highly suspected to be mental illness. It is recommended to see a psychiatric clinic as soon as possible and listen to the advice of experts. It's best not to let mom go, so as not to aggravate her illness. You should go instead of her and tell the experts about the situation. Early use of psychological suggestion and other means should still be possible to correct it. Good luck.