I am 5'2.5. I always find this topic interesting because most ladies my height ride a smaller bike than I chose. I ride the Ruby Pro 51cm. My Dolce was the same. My seat is pretty much in line with my handle bars and feel comfortable, with no aches or pains anywhere, not even on a century ride. When I tried the 48cm, which was the first time on a road bike I thought I felt a bit cramped.
My inseam is a 29.
PS..I also had tried a smaller Allez and it felt like too much bike for me to handle.
~ JoAnn

