Men in bike shops do tend to put women on too big bikes.

Today I met a really nice wrench and bike fitter in a bike shop in a city where I live only temporarily. I shared some of my concerns about my bike being too small. He told me that he always prefered a too-small bike because you could do something with it to make it fit (well if it's one size too small). When the bike is too big you can't do anything to fix that.

Just his 2 cents, for what it's worth...