"My mother was humiliated. I can't accept that my mother was treated like that just hours before she died," Ngcobo said.
She said Facebook comments defending the nurse and criticising the woman for posting the video were "wrong".
"I am not angry at the woman who put up that video. She did it to help other patients. I am angry at the nurse. She was belittling her," Ngcobo said.
Ngcobo has no plans to meet the hospital's management or the KwaZulu-Natal department of health.
"My lawyer must now deal with this. I have to bury my mother."
The health department said it appeared the nurse did not address the patient in a manner that conveyed empathy.
"The nurse also appears to be changing the patient's nappy without drawing the curtains. Such conduct is contrary to the Batho Pele principles and codes governing healthcare professionals," said department spokesman Samuel Mkhwanazi.