What difference does it make anyway, Say you been having sex since 1st year of high school, so your 12 to 13 how many girls have you been with by the time your 20, plenty.
So if your going to judge or speculate on how many times a girls had sex then you shouldn't be going out with her.
What people do before you go out with them is there business, if you can't handle the truth if you ask then next time you will know better.
I gather your question is a hypothetical one anyway, but how many times we have sex in our lives doesn't determine what sort of person you are, some girls and guys have plenty of sex, some don't.
If i was to live my life over sexually i wouldn't change a thing, (except for the last year) otherwise i would have no idea how many times i had sex by the time i was 20.. so now being in my 50's who knows and who cares, as long as you got thru life with no stds you are doing ok, thankfully i can say that.
So to really answer your question if you really clicked with a W/L and had great chemistry you wouldn't go out with her because of her job, that doesn't tell you what sort of person she really is..