When a parent has had behaviors that don't link with reality from the time you turned 12 and now 60, is it appropriate?

to give the physicians a few examples of bizarre behavior over the years ? I am the youngest and observed many of her behavior changes that were never seen by my older siblings. Adults observed them, too, but they have all passed away. My examples are kind but clearly that of a non-functioning 39 year old mother who is now 88, Mother had a traumatic brain injury almost 8 years ago, but her behavior is combative now, although she functions fairly well in public but can demonstrate bizarre behaviors. She refuses to get a good checkup, but she is going to get one or I will ask for help from the Department of Children and Family services. She is 88 which is still young in our family. Medication could change her life for the better. She deserves help even though other family members will not help her. I would appreciate any input.