I would say for the most part most ladies I see would provide a reference. So the question is how long ago that you saw a lady is it OK to still use her as a reference?

Is it proper etiquette to tell the lady you just used her for a reference?

On the flip side I am always amazed how many ladies only have 1 review!   Isn't that like seeing a guy with no references. I mean she could could be any of the things you mentioned.  flakes..Law enforcement..Dishonesty..Poor Hygiene..Thieves..Abusiveness .ect