According to the description of your symptoms, it can be summarized as follows: the feeling of being watched and the delusion of being killed are not mental depression or psychological problems, but mental problems.

It can be understood that when a person feels that someone is watching him and someone is hurting him, he will inevitably show symptoms such as fear, panic and inability to sleep. At this time, it is impossible to achieve therapeutic effect by simply using sedatives and sleeping pills. The premise of medication is a clear diagnosis. The sense of being watched and the delusion of being killed are one of the many symptoms of schizophrenia, but they are not exclusive symptoms of schizophrenia, such as paranoid mental disorder and paranoid seizures. But the onset time is only a few days, and it is acute. The standard course of diagnosis of schizophrenia and paranoid mental disorder is more than one month. I suggest you go to a psychiatric department. The doctor may diagnose it as "paranoid attack" or "schizophreniform psychosis". Both diseases are acute diseases, which should be treated with antipsychotic drugs and sedative sleeping pills. It is best to be hospitalized, which is convenient for observation and good for prognosis.

Please forgive me for my limited level and improper use of words. I wish your mother a speedy recovery.