You can't generalise people's emotions and reactions. Everyone copes differently to different circumstances. If you do generalise, you run the risk of prejudice, i.e. what YOU consider to be serious and ignoring what is important to a patient (exactly what is happening here). She finds it important, to the extent that she feels she cannot cope. Also diazepam isn't that fun, you get a nasty hangover effect with it. Some people get palpitations when they go on stage. Is it wrong they get prescribed beta blockers? Some people get carsick, to the extent that they cannot visit their grandparents over christmas. Is it wrong they get prescribed cyclizine?
And saying all about medics/students? Have you any idea how many medics suffer from mental illness? Drug abuse and alcoholism is sky high! Noone is immune from stress. If you want a biochemical model, look at the pain gate theory. That is why some people cry like a baby with a cannula whereas some people can withstand the most tremendous pain without analgesia.