I think that what people don't seem to understand is the lady that killed herself was not white. She looked to be Indian and probably wasn't accustomed to some aspects of western culture. Many Indians take their work very seriously and even a simple mistake like this can cause complete humiliation for them based on the pressure put on them by the culture they were raised in.
You can't just assume when you make a hoax call to a random person that they will take it as an innocent prank and laugh it off.
All she did was forward a call, the other nurse made the mistake of giving out information (And even then it was just "She's fine")