First of all congratulations on being a 6!
I asked this question once a few years ago of some pros at TV and never got an answer. Since I have never played with a woman that plays the blue tees, I forgot all about it. With my curiosity up I just looked around and find that the FSGA does not have ratings for TV courses either, but The USGA has a solution.
The USGA covers this in the handicap manual. The manual is at:
http://www.usga.org/bookrule.aspx?id=14379
The details are in Section 5.2, sub section G