It's not the physical side it is the mental side that induces massive stress on the heart and mind to achieve the results expected.
Japanese statistics in this area are mind blowing.
Mind, I am of the strong belief Thailand doesn't have any problems in this area.
Why only six months?? She should be banned from working with tourists forever. This was clearly a deliberate unprovoked attack over a trivial matter - this woman is nuts and as such should never be allowed to work with tourists. Who knows how many more she attacked which didn't go public.