When I bought my Terry, the shop didn't have the size I thought I needed either. But Terry works really well with local shops, and my LBS was able to get the size I wanted to try without my having to definitely say I'd buy it. So you might either talk to the shop manager/owner or email Terry and ask about their working with your LBS.

I'm pretty short, but still I've ended up being comfortable on bikes shorter than my height predicts, because my legs are not long, but proportionally long compared to the rest of my body, and my torso and functional reach are incredibly short. All this is by way of seconding what jenxxs said about size. Good luck, Xeney--I really hope you find a road bike that fits--and that you can afford.