I've been running a solo girl blog for the past three years. It's located at
http://rochardsbunnyranch.com/blog/
I've seen ratios triple in the past three years. It's been horrible.
A few things for you.....
- Check your links. I've screwed up links before and lost a ton of traffic. Ask Spunkycash.
- Are you sending to a sponsor you trust? Shaving does happen.
I'd say change sponsors.
For some damn reason one girl on my blog does much better than all the others - I get more searches for Allison Angel, more traffic from my blog to her site, better conversions, and better retention with her. Go figure.