To call this abuse is over exaggerating. The patient didn't threaten physical harm or even use foul language. Yes the patient was extremely over the top annoying. Yes the patient shouldn't have become irate, condescending, call the nurse incompetent, insubordinate, has no business being in this profession, belittling the nurse, etc.
This is an obviously sick (or she wouldn't be in an acute care hospital) immature woman with lots of issues.
The Nurse is, should be considered, a highly trained, educated, "professional". I have handled such situations badly. But I realized it as I was doing it, knew I was worried, stressed out from issues at home (nothing serious). To this day I still cringe when I remember it.
Dismissing a patient's complaints, telling a patient not to use the call bell unless it's urgent because it is 2 am, telling a patient they are disrupting other patients. If you don't realize that is absolutely not the way to handle this situation I can't help you.
Better staffing ratios are a concrete way to help stressed out over worked nurses.
And as far as I hear and read, there is not a nursing shortage.