You need better research skills. Or Google. Not many quality ladies are based in Manassas, VA. Just not big enough of a market. With bother out there when you've got the K Street Lobbyists downtown.
My recommendation? Find an excuse to get yourself into the city. Plenty over by Tyson's, Springfield, and Alexandria too.
I can't vouch for any of the links below but here's what I found just by looking for reviews that included the word Manassas.
http://honeysweetz.naughtynsexy.com/ ... 12 reviews from that other site.
http://sexyjen.naughtynsexy.com/ ... 57 reviews from that other place.
http://iamjessica.yourcharmgirl.com/ ... 9 reviews from same place.