I am not certain of your exact question and therefore can only provide a general answer. I have answered many similar queries regarding schizophrenia. You may find it helpful to read through some of my previous answers. Many of my answers about schizophrenia and its impact on families can be found by clicking this link.
Schizophrenia is often considered a family problem. This is because schizophrenia typically has a profound impact on the family. The most comprehensive treatments for schizophrenia usually include the involvement of family members, in some capacity. Based on your letter, I did not get the impression that your mother’s treatment incorporates family involvement. The primary treatment modality for her seems to be medication. I would recommend speaking with her treatment team. Inquire about whether it would appropriate or helpful for you and your family to be part of her treatment plan.
Having a family member with schizophrenia, who refuses treatment, can be very frustrating for the rest of the family. They struggle to understand why their loved one would refuse the very treatment that could make them better. An individual’s refusal to participate in treatment or to recognize that they have an illness makes them seem “difficult.” Families often (understandably) react to the “difficult” family member with frustration and anger. That frustration and anger can unfortunately lead to chaos in the family.
What is important for families to understand is that approximately 50 percent of individuals diagnosed with schizophrenia cannot recognize they are ill. This is due to a neurological deficit called anosognosia. Anosognosia affects the prefrontal cortex of the brain, which is used for insight and understanding of one’s needs. If an individual does not believe they have an illness, they may (and often do) refuse treatment. Individuals with schizophrenia do not refuse treatment in an attempt to be “difficult.” Anosognosia blocks an individual’s ability to recognize that they have an illness. You can read about anosognosia in Xavier Amador’s book: I Am Not Sick I Don’t Need Help! For a deeper understanding of anosognosia and related medical conditions, consider reading a truly fascinating book called Phantoms in the Brain: Probing the Mysteries of the Human Mind by V.S. Ramachandran and Sandra Blakeslee.
If your mother is aggressive toward you, then you may have to limit how often you interact with her. You may want to discuss how best to approach this with the hospital/residential living facility staff. It is important to visit your mother and to be part of her life but boundaries have to be set if she is physically or verbally abusive toward you.
I would recommend educating yourself more about schizophrenia and how it affects family members. I realize that you are not living in the United States but you may find a lot of helpful information on the National Alliance on Mental Illness (NAMI) website. NAMI specializes in support and psychoeducation for family members who have a loved one with schizophrenia or other mental illnesses. Helpful books include: Surviving Schizophrenia: A Manual for Families, Patients and Providers by E. Fuller Torrey and The Complete Family Guide to Schizophrenia: Helping Your Loved One Get The Most Out of Life by Kim T. Mueser.
If you have a more specific question, please do not hesitate to write again. I will be happy to answer any additional questions that you may have. I wish you well. Please take care.