Psychic problem. Alone there in kanpur.

Hi, 7-8 years back, my mother lost her mental control due to some happening at home. That time she started taking sleeping pills as per psychiatrist recommendation. But she cured with time and stopped all medicine. she is fine. But sometimes she talk differently..She don't believe in anyone..Even her son daughter and say that you all stay nearby only but don't tell me. You all fooling me etc..She stay at kanpur with papa. She don't believe in father's job also..I am not able to get...What is the issue..Some time she starts telling that I have somebody walking in street, who has already died or not even stay there. She start matching faces and say that everyone stay here only but fooling her by saying that they are in foreign , Bangalore , Gurgaon etc. Please help me. I want my mummy back as she was. Environment at my home is not good. And she will never come with me to stay. My parents are alone there in Kanpur. Thanks Ankur Gupta Bangalore