my mother has it

hi my name is bobbi and my mothey has the paranoid form of this illness. she is not taking her meds right and is still having problems we try to talk to her and she just gets angry so we go behind her back and call her doctor and they keep changing her meds but she acts like she has no problem. my mother is a christian and thinks that this problem is a spiritual matter . She has spoken with her pastor and he has told her its not a spiritual problem and to listen to her doctor but she is not . Is there anyone else goin through this? Are my sisters and i alone? we dont know what to do .