Sorry but this prank is not worth someone choosing to kill themselves over. The persons played a practical joke. The person played took it way too strongly. Nobody should kill themselves over that.
I agree but we don't know what else was going on in this person's life, the thought of being disciplined or loosing her job may have been the breaking point and tipped her over the edge, the extra pressure of taking care of such a high profile patient must weigh on these nurses and the publicy around it must have been devastating.
I think it was a dumb prank, Kate maybe royalty but she deserves the same privacy as any other patient in hospital. I don't think it was malicious but it has ended tragically and I'm sure it will take a while for those DJ's to move on from this also.