My mother (76) is having auditory hallucination. She talks to her electric fan. What can we do?

Waiting friends to accompany her to her house somewhere. That she has to transfer to her house but cannot tell specific location. We know it is not true for she has no house of her own except the present house of my sister where my mother used to stay. She said my father is there in that house when in fact it's been a year already my father died. Only she can't accept the death of my father. Some times she says my father is there in his sister in New Jersey and he is alive. She always stays in their bedroom where she and father used to have their conversation. She keeps on repeating that policemen gave her that said house where she only and my father would stay. That the title is already issued to her thru the assessor's office...of which i know is not true. Whenever i tell her to see a doctor she refuses ..says she has no health problem. Me and my daughter accompanied her to a psychiatrist without her full knowledge. It was only last week. It is every day that she mentions my father and recalling events with my father. I think why she can not forget my father is because she was only 18 and my father was 25 when they married. They were so loving..no quarrel...talks with all respect to each other...honestly appreciate whatever good things done by each other. When father was so sick and in and out of the hospitals for how many years until his last days ...my mother was always with him and besides him for his food, medicines, conversation of any topic and any personal needs of my father. They pray the rosary every day since I was a kid. By the way we are three children..i am the eldest (57), second is my brother (55), and third ..a sister (42). My brod is in Canada with his family..my sister with her family are in California. I am in the Philippines with my family too. It is me and my two grown up children taking good care of my father til his death and now for my mother. So as I've mentioned they pray the rosary and pray every night. But, lately my mother does not pray anymore with my father...does not like to go to church even when my father was still alive though very sick. My father died last Dec. 26, 2012...since then and until now my mother refuses to go to church and has a negative impression on doctors. My mother can still wash her own clothes as she used to do since we were small kids...cooks rice..water the plants...but after this go and stay alone again in their bedroom...and i could notice talking alone if not to the electric fan. It is every day for two weeks now that she would request us to accompany her to find her house of no exact location everytime we ask where. I told her maybe it was only in one of your dreams that as if it was true...but she insisted it is really true..but she can't tell exactly where. Believing that she is transferring to that house...she was packing her clothes in 5 bags and some were placed in the empty rice sacks. Ready to be brought outside the house waiting her friends in a tricycle to arrive and fetch her. She attempted this 4 or 5 times these last two weeks. We tried to stop her in a compassionate manner. This becomes my problem for i could not be at home to be with her every day because I am working. And my two children also have their own concerns...but we take turn in watching their grandma. Going back to the times when my father was so sick til his death..it was so difficult for me being the only child caring for her with my two kids and husband. Now for my mother...i plan to have her with my brother or sister in Canada or California. The reasons are to have a complete change of environment for my mother ....to keep her from remembering my father almost every minute...seeing their bedroom...the sala..the kitchen and all corners of the house where they stay for many many years. I think all these aspects are all reminders that make her sad...unhappy and keeping silent almost all the time..except when we take her to Malls as recreation or as outlets. I could say that her only best friend was my father. Her friends are also old and just can't have time to meet and have a chat unlike before. So her only companions are we with my two grown up children. We tried our best to show and to speak to my mother gently and carefully so as not to hurt her or offend her. But only i am confused if are we going to go with her wishes when we are sure those wishes are really true and are not really existing like the house she used to tell us a house somewhere..but there is no exact location ...just a hallucination. Is my idea of sending her to my brod or sis a help to her? As far as a complete change of environment and of people around and with her is concerned. As far as i know ...the doctors, therapist, and facilities in California or Canada are more advance compared here in our town. I still believe my mother would be cured and be back to her normal condition as soon as her environment is changed and together with a better medication and the change of family members around her. Please help me what to do for the good of my mother.