The family of an elderly Brazilian woman have filed a lawsuit against the hospital they say is responsible for her death after one of the nursing technicians injected soup into the woman’s vein IV instead of her feeding tube.

Though Santa Casa de Misericordia de Barra Mansa in Rio de Janeiro does not deny the mistake was made, they claim it was not responsible for 88-year-old Ilda Vitor Maciel’s seizure that followed or her death. However, the form requesting an autopsy, which was signed by one of the hospital’s doctors, stated the accident was the likely cause of death, and suggested it caused a pulmonary embolism.

On September 27, Maciel was admitted to hospital after suffering a stroke (cerebrovascular accident, CVA) which paralyzed one side of her body. Her family said she was showing signs of improvement. Maciel’s son said he even spoke with his mother on Sunday and she seemed to be doing well considering the situation.

According to the family, the nurse technician, who was only identified as “Ana”, injected the soup into Maciel’s right arm. Maciel’s daughter, Ruth, said her mother then began to have a seizure and that’s when the nurse technician ran out of the room to get a nurse. A doctor was also called in and Maciel was given medication to stop the seizure. Just 12 hours later, Maciel was dead.

Ruth has said she has no doubt her mother died as a result of the nurse technician’s mistake.

On Tuesday, her family laid Maciel to rest, but they are not going to rest until they get the truth.