Janice - FWIW, at Rosaryville on Saturday - for the first time ever I loved my dualie. I know a lot of those more experienced women were using there SS bikes in that area, but for me, I found the dualie stuck to those swooping rollers like it was glued to the trail (very comforting for the roadie in me).
I don't recall how tall you are compared to me (I'm a bit over 5'8") - and do you have SPDs on your bike? - but the next time we go out, let's swap bikes and you can try my Klein for a bit. It's a size M and you should be able to do fine on some of the less technical stuff to get a feel for it.
2007 Seven ID8 - Bontrager InForm
2003 Klein Palomino - Terry Firefly (?)
2010 Seven Cafe Racer - Bontrager InForm
2008 Cervelo P2C - Adamo Prologue Saddle