<<This is an interesting viewpoint. What it
sounds like you are saying is that when the consequences for adultery include
the possibility of being stoned to death then girls should be careful. The
implication or unspoken reality being that when the consequences do not include
being stoned to death then girls need not worry.>>
I
think the warning also means "be careful of the APPEARANCE of
impropriety." What we may consider playful flirting or just being
friendly may get you in trouble if locals assume there is more involved or if
someone decides to get you in trouble.
My
sister spent 6 months in Saudi in the Air Force and was quite dissappointed that
she was essentially not allowed to leave the base as the Air Force decided it
was just too risky. They had bazaars come on base so people could buy
trinkets. It was just too risky that a women might expose her face on a
hot day.