"Nurse's have no right to discharged a patients?"

Anything else?

Hi there, my sister was at hospital, and had been operated on her stomach due to an infection because of her type one diabetes health? The day she was operated, after few hours of recovery they had said she is ready to go home, that she is ready for her discharge. She was in a lot of pain, demoting and discomfort, where as the doctor's and nurse haven't noticed. A family member of the patient had spoken to the head nurse and had complained regarding her health deteriorating? After spoken to the nurses, nurse had spoken to the doctor, and the doctor in charge came few hours later saw the patients and said (you shall be observed overnight and shall see how you do with your health). The next day had been discharged, with her deteriorating health issue? 1) She was still vomiting 2) She had less fluid in her body. The two points that i have noted above, was found out the very same day of her discharge, that evening she had to go back to the hospital, b calling the ambulance regarding these two issues, where as she had been told she is deteriorating and her health condition is getting worse, she had been given the saline drips, and a course of antibiotic on the drip. The new hospital should have been more grateful, then the old hospital, and should have noticed how the patients condition was deteriorating, it is really disgraceful. I hope my complain will be noticed and also noted?