Mother diagnosed
Hi, Many people go through this kind of problem. You have different options1. Take psychiatrists or legal help and admit her on involuntary admission and once she improves she will gain insight2. Give medicines prescribed to her without her knowledge covertly in food or Chat Doctor.  Depends on the law of your land -It is considered illegal and arguably unethical, in some parts of the world.3. Don't argue or confront direct conversations in such a way that she comes out with her inabilities and enumerate her problems. Can use non-mental models like explaining physical problems or weakness as reason to the inabilities and take treatment for same.4. Take help of psychologist for insight oriented psychotherapy5. Talk about the stigma and motivate to get rid of stigma. Choose any but keep the first option always open. Hope your effort succeeds.