She had lived with her son and his wife (my parents-in-law) by the end of last year. But, she checked in a hospital on December 31 because her condition became worse. She could not return home since that time.
Unfortunately, we could not celebrate for her long life, "Haku-jyu"（白寿） at home with our family members.
People in Japan celebrate a person who has reached to 99 years old. It is called the celebration of "Haku-jyu"（白寿）. Why? A kanji character "百" that means one hundred becomes "白" after its one part has been removed. 100-1=99 !! Can you understand it?