If my father-in-law is ill, should I take care of him as a daughter-in-law?

If my father-in-law is ill, as a daughter-in-law, I should take good care of him, because my father-in-law is her husband's father, and he raised her husband hard. If her husband is not free, my daughter-in-law should take good care of him. If there is a mother-in-law at home, the daughter-in-law will help her mother-in-law take care of her father-in-law and do something for him. When grandpa was diagnosed with advanced liver cancer, my aunt was particularly sad. Since then, my grandfather has been ill in bed. My grandmother had a car accident a few years ago, and she can hardly take care of herself. Therefore, the responsibility of taking care of grandpa falls on my aunt. My grandfather's life is running out. My aunt tries to cook good food for her grandfather every day. She finally wants to be filial to grandpa. Every day, she gets up and goes to the market to buy fresh vegetables for grandpa. Some fresh vegetables are particularly expensive, a few dollars a catty, and my aunt will buy them for grandpa. My grandfather never blinks when spending money on him. Sometimes grandpa can't eat any more, but she still cooks it for him. My grandfather is lying in a hospital bed, sometimes his legs get numb, and my aunt will massage him. I think a daughter-in-law can do this, and I am satisfied. Every day, menstruation will help grandpa wipe his face, wipe his arms and legs, and give menstruation a bath. Aunt will make water and let uncle wash grandpa's feet. When Grandpa sleeps at night, she will help him wash his feet and let him have a good sleep. Grandpa's illness is getting worse every day. My aunt is in Lacrimosa every day, but I'm afraid my grandfather will see me, so I'm relieved, saying that it will be all right soon. Grandpa knows her illness and won't expose her, because he has taken her as his own. Aunt's filial piety to grandpa is worth learning. I am very touched.