I had a hard time finding women's carbon bikes to test ride. (Not that I'm in the market right now...) Most shops don't keep the higher-end WSD bikes around, period, or they have a limited pool of sizes to choose from. (I need a 51-54cm; no one has them.) The floor stock may be a matter of what they have lying around. Can you find aluminum in your size with the same geometry? I think you'd need a 48-50cm, depending on the manufacturer and your build. You might have to do a lot of driving around. Last time I wanted to test bikes I had my BF take me around to shops in Phoenix...