I guess you need to convince your mother to see a good & gentle doctor. Tell her - 64 years old is very young, average life span for a HK female is about 90-92 years old. She need to clarify (& heal ) the problem not only for herself, but also for her daughters & grand daughters (the family health history will help her, her children and grandchildren to prevent some health problem in the furture).
I use to be afraid of doing annual breast check-up, find it very embarassing.
But 2 years ago, my "school doctor" (I work in an educational institution) recomended me to consult 陳惠娟醫生. She is very polite, kind and gentle. She respect her patient & treat her patient with great kindness. I also refer my younger sister to consult her. Tell your mother to resolve the problem. No need to worry. Dr. Chan is a very kind & gentle doctor. She respect patient & allow patient to keep their dignity. No need to worry ah!
sometimes, elderly people does not want to create financial burden on us, so they refuse to consult any doctors (they think it's expansive, & create burden for their children.
You need to comfort her, & tell her "her health is most important", by resolving her health problem, she is helping her daughters and grand daughters to prevent furture health problem ...
Remember You're the only person who'll care enough to look after her, so you need to convince her with love & wisdom ...