I hate to tell you this, but the chances of you being able to find biked your size to test ride are slim. Few shops stock them that small. You might have to order and buy sight unseen.

There's another TEer selling an xs Bianchi Eros Donna. Steel road bike. It's the bike I have and love. You'll have to do a search. I'm on my iPhone at the moment or I'd look for you.